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What can you do?
Every tool on RomToolKit runs right in your web browser. Load your own copy of the game, pick what you want to change or add, and save it. Here is everything each tool can do, game by game.
Every tool can
- Start here wizardA step-by-step walk through the whole tool, one round at a time, from loading your game to playing or sharing it.
- Original or Original +Keep the game just like you remember it, or add any of the new features you want on top.
- New features in one placeEvery feature the original game never had sits on one tab. Flip a switch to put it in your game.
- Play it nowTry your changed game right on the page, with sound, a keyboard or a controller, save states and full screen.
- Save a patch or a ROMSave your changes as a BPS patch to share, or as a ready-to-play game file just for you.
- Presets and share codesSave your setup and share it with a friend as a short code.
- Undo and redoTry anything. Undo puts it back.
- Nothing to installNo downloads and no sign-up. No ROM is included: you load your own copy, and it never leaves your computer.
Nintendo (NES)v1.7.535 things you can do
Punch-Out ROM Hack Creator
For Mike Tyson's Punch-Out!!
Make your own version of Mike Tyson's Punch-Out!! for the NES. Change every boxer, what they say and how they fight, give Little Mac more (or less) power, and add things the original never had, like a real 2 player mode and an Options menu on the title screen.
New features you can add
Things the original game never had. Flip them on in the tool.
- New options menuA brand new OPTIONS menu right under NEW and CONTINUE. 2 Player Mode, Exhibition Mode and difficulty settings live here, and more goodies are on the way.
- 2 player modeGrab a friend (or a rival, or your little brother) and let them play the boxer on controller 2: punches, guards, and his big special on Start.
- All boxers can dodgePlayer 2 dodges with Left and Right. Yes, even Von Kaiser and King Hippo, who had never dodged anything in their lives.
- Player 2 gets the boxer upPlayer 2 mashes A or B to get the boxer back on his feet, just like Little Mac.
- 2 players always on normalPick 2 PLAYERS in OPTIONS and DIFFICULTY locks to NORMAL (it turns gray), so the fight stays fair for both players.
- 2P race ExperimentalPick 2P RACE under PLAYERS in OPTIONS. Player 1 fights a boxer, then player 2 fights the same boxer on controller 2.
- Play as the boxer Still testingPick PLAY BOXER under PLAYERS in OPTIONS. You play the boxer with controller 1 and the computer plays Little Mac.
- Exhibition modePick any boxer in OPTIONS and jump straight into that fight. Win or lose, you go right back to the title for another go.
- Difficulty settingsFive levels, from Ultra Easy (Mac hits twice as hard and the boxers go easy on you) to Very Hard (good luck, champ).
- King Hippo can get upHe gets back up like everybody else. Pick who gets him up: the computer and 2 player (he borrows Don Flamenco’s rules), or 2 player only.
- Knockdowns for a TKOPick how many knockdowns in one round end the fight: for a TKO win (the boxer goes down) and a TKO loss (Mac goes down).
- Mash for healthOnce the other guy hits the mat, mash A or B like crazy: every 5 presses gives you a little health back, and your name flashes on the name bar while you mash.
- RandomizerShuffle what each boxer throws and when, his stats, names and colors, or smash CHAOS MODE and see what happens.
- Password rememberingThe game remembers your password: it’s already filled in on CONTINUE. Just press Start and go.
- Names above the health barsEach fighter’s name shows right above the health bars, with who’s driving: 1P, 2P or CPU.
- Secret codes made easierThe Another World Circuit and credits codes work with a plain old Start, like any other password.
- Easier button mashing to get Little Mac upMac (and the boxer, when player 2 gets him up) needs fewer A and B presses to get up, and the last few presses don’t slip away as fast.
- Your credit on the title screenThe title screen says your game was made with Punch-Out ROM Hack Creator, with ROMTOOLKIT.COM at the bottom.
What you can change
The parts of the game you can edit.
- PortraitRecolor it, draw on it, or bring in your own picture. His colors in the ring too.
- HealthHow long his health bar is.
- Punch damageHow much each punch takes off Little Mac.
- Extra damageA bonus added to every punch he lands.
- HealingWhen he gets health back after landing a punch.
- SpeedHow fast each of his moves plays.
- ProfileHis name, hometown, age and weight on the intro screen.
- Pre-fight linesWhat he and Doc say before the fight, shown just like the game screen.
- CPU patternsWhich punches he throws, in what order and when. Or shuffle them for a surprise.
- Special quirksHidden rules the game never told you, like Bald Bull who can’t be knocked out the normal way, boxers who dodge star punches, or punches that knock Mac down in one hit. Give them to any boxer or take them away.
- Getting upHow many times he gets up, on which count, and how hard he is to keep down.
- StarsHow many clean hits Little Mac needs to earn a star against him, and how much a star hurts.
- 2 player buttonsWhich button does which punch, and the combo his Start button plays.
- Little MacMake Mac’s punches stronger or weaker (boxers still block them), and change his health, hearts and profile.
- Fight orderFace the boxers in any order you like.
- PasswordsEvery password in the game, the secret ones too.
- CheatsGame Genie codes for the updates that are only a few small changes, if you’d rather not use the tool at all.
Nintendo (NES)v1.2.1127 things you can do
Paperboy ROM Hack Creator
For Paperboy
Make your own version of Paperboy for the NES. Change your lives, papers and points, the words and the TOP TEN, the colors and the pictures, and add brand-new ways to play like 2 players at once, Total Carnage mode, a shop at the end of each day and a bunny hop.
New features you can add
Things the original game never had. Flip them on in the tool.
- 2 players at oncePick 2 PLAYERS and you both ride at once. Player 2 uses controller 2 and wears red.
- Total Carnage modeA new choice on the title menu (1 PLAYER CARNAGE, and 2 PLAYERS CARNAGE with 2 players at once).
- End-of-day shopAfter each day’s report a shop opens: spend your points on an extra life, a bigger bag (5 more papers every day and from every bundle), a star shield (it saves you from your next crash, erases what hit you, and you blink for 4 seconds), double points for the next day, or a new customer.
- Crashes cost pointsEvery crash also takes points off your score (2,500 unless you pick another amount).
- Bunny hopTap A to hop. While you’re up in the air you sail over dogs, drains, cracks and the other things on the ground, with a sound you pick.
- Cracked concreteA new obstacle: cracks in the sidewalk in front of the houses. Ride into one and you fall, so hop over it.
- Monday garage warpNow it does. On Monday, ride up a driveway into an open garage and you warp to Thursday, with a warp sound.
- Get back upWhen you fall, GET UP blinks above your paperboy. Mash A or B to hop back on where you fell (8 presses, or pick how many): it costs a life, and you blink for 2 seconds so nothing can hit you.
- Busy or quiet daysSet the most obstacles for each day, from 0 to 9, and pick which ones show up and when.
- Pick your customersChoose which house styles are customers, from 2 houses up to all 20.
- Free papers win customersToss a free paper onto a non-subscriber’s doorstep without breaking any of their windows, and at the end of the day they might sign up.
- Start on any dayJump straight to any day of the week, Sunday included.
- More livesStart with anywhere from 1 to 9 lives.
- Bigger paper bagStart each day with up to 99 papers, and get up to 99 from every bundle.
- Smoother play on busy daysThe game unpacks the street map faster, so busy days keep up much better.
- Clear daily reportHouses that cancelled today blink black and new customers blink green, taking turns so you can always tell which is which.
- Infinite livesCrash into all the lawnmowers you like. You never lose a life, so you can see the whole week.
- Infinite papersYour bag never runs out. Throw at every window on the street (we won’t tell).
- Never lose a subscriberNobody ever cancels, no matter how much damage you do. Handy for testing; the report will say PERFECT DELIVERY every day.
What you can change
The parts of the game you can edit.
- ScoringSet the points for mailboxes, doorsteps, windows, hitting bad guys, the bonus course and paper bundles.
- ScreensRewrite the words on the title, map and report screens, and pick their colors.
- High scoresMake your own TOP TEN list, names and scores.
- DaysRename the days, set how busy each day is, pick which obstacles show up and who takes the paper.
- ColorsRecolor the street, the obstacles, the title newspaper, the map and the bonus course.
- GraphicsRedraw the pictures in the game, tile by tile.
- Game rulesLives, papers, the starting day and the cheats in one place.
- Save patchSave your changes as a patch to share, or as a ready-to-play game file just for you.
Nintendo (NES)v0.91.11Beta26 things you can do
Dragon Warrior Workshop
For Dragon Warrior
Make your own version of Dragon Warrior for the NES. Change the monsters, items, shops, spells, story and pictures, paint new maps, add new towns and caves, and add things the original never had, like a boat, a second party member and inns that let you save.
New features you can add
Things the original game never had. Flip them on in the tool.
- A boat to sailPaint Ports on the overworld coast and the hero can sail a boat from them.
- Chests stay openedOpened chests stay opened and used doors stay gone, up to 200 of them.
- Inns work like the kingAfter you rest, every inn tells you the experience you need, buys your spare gear and lets you save.
- A second party character Still testingA companion walks behind the hero and fights beside them, with their own level, gear and spells.
- The faster one goes first Still testingEach round, whoever has more agility picks their move first. A tie goes to the hero.
- New towns and cavesMake new random towns (houses, shops, inns, streams, bridges) and caves, link them to the overworld, and walk right in.
- Walk onto stairsWalking onto stairs takes them, including the stairs you add.
- Walk into doorsWalking into a locked door opens it when you carry a Magic Key, using up one key like DOOR does.
- Smart A buttonOn a chest A opens it, facing someone A talks to them, otherwise the menu opens as usual.
- Reassign map commandsGive any spot in the map menu a different job, with a plain-English line for each one.
- Swap the A and B buttonsB does what A did and A does what B did, everywhere in the game.
- Fewer people wanderOnly the first few people on a map keep walking; the rest stand still where they start.
- Gold and EXP rate menuA new game asks for the Gold and EXP rate instead: 4 TIMES, 2.5 TIMES or NORMAL, and messages always run fast.
What you can change
The parts of the game you can edit.
- SpellsRename spells, set when the hero and the companion learn them, what they cost and how strong they are, and add new spells.
- MonstersStats, spells, resistances, colors and pictures, and up to 24 new monsters.
- ItemsWhat each item costs and does, and new items.
- ShopsWhat every shop sells, and the inn prices.
- HeroThe level-by-level growth, how the hero’s name changes it, spells, and how the hero looks.
- PartyA second character: name, look, starting gear, level table and spells.
- MapsPaint the overworld, towns and caves, make maps bigger, place people and chests, and add new towns and caves.
- EncountersWhich monsters show up where.
- DialogEvery line the people say, the story and the battle messages.
- ScreensThe title screen and the new-game screens.
- MenusThe command menu’s jobs and the words in every menu and box.
- SpritesRecolor and redraw the people, tiles and monsters.
- Save patchSave your changes as a patch to share, or as a ready-to-play game file, at the final battle.
Nintendo (NES)v0.7.9Beta24 things you can do
Baseball Stars ROM Hacking
For Baseball Stars
Make your own version of Baseball Stars for the NES. Change every team and player (names, faces, numbers and pitchers), the lineups, the hire market and the colors, make your own team right in the tool, and add new house rules like a money system where every play pays.
New features you can add
Things the original game never had. Flip them on in the tool.
- One controller, both sidesEverything you press on controller 1 also counts as controller 2, so one person (or two friends passing it back and forth) can run both teams.
- New money systemEvery play pays: strikes, outs, hits, runs and jump catches. Each team’s box on the batting screen shows its money as it comes in.
- Balls are strikesPitches that should be balls are called strikes.
- Skip the intro screensJumps past the SNK logo and the title straight to the main menu.
- Auto fieldingYour fielders go after the ball on their own.
- Money that never runs outSpending money adds to your total instead of taking it away. Hire and power up as much as you like.
- Home run on SelectPress or hold Select while the ball is in the air and it flies out of the park.
- RandomizerEvery player on every team gets a new name, and new numbers too if you want. Girls get girls’ names, and Undo takes a roll back.
- Create your own teamThe game’s own MAKE TEAM, without the menus: pick a strength type (power hitters, good defense, fast runners and more), name the team, and your game makes it right in the tool.
- Delete a made teamTeams you made can be removed, exactly like the game’s REMOVE TEAM does to your save file.
What you can change
The parts of the game you can edit.
- TeamsRename all 8 teams and change their initials and uniform colors.
- PlayersEvery player on every team: name, face, boy or girl, bats left or right, batting stance and position.
- Player numbersHitting, batting power, running, defense, luck and prestige, plus the average and home runs on their card.
- PitchersStamina, speed, both curves, drop, ERA, which hand they throw with and their pitching form.
- FacesPick any of the game’s 256 faces for any player, drawn right from your game.
- LineupsThe batting order and who plays where for each team.
- Hire marketWhat rookies, veterans and stars start with, what they cost, and their name tags.
- PricesThe hire prices and what every player is worth.
- UniformsEvery team’s uniform colors side by side, with a look at each team at bat.
- Screen colorsThe colors of the title, the menus, the scoreboard, the field and more, with a look at each screen in your game.
- CheatsClassic Game Genie codes you can switch on right in your game.
- RandomizerNew names, and new numbers if you want, for every player on every team in one roll.
- How this game worksMoney, prestige, MAX and the other quirks of the game.
- Save patchSave your changes as a patch, or as a ready-to-play game file.
Super Nintendo (SNES)v0.10.1Beta32 things you can do
Final Fight ROM Hack Creator
For Final Fight
Make your own version of Final Fight for the Super Nintendo. Play with two players at once like the arcade, bring Guy over, keep fighting where you fell, edit every stage and wave, tune every enemy and boss, and recolor and rename everyone.
New features you can add
Things the original game never had. Flip them on in the tool.
- Play as GuyGuy comes over from your Final Fight Guy ROM with his own moves, look and colors.
- RandomizerRoll who shows up in every wave, what’s in the oil drums, everyone’s names, how hard they hit and more, from a seed you can share.
- Two players at oncePress START, pick 2 PLAYERS and the other hero drops in. Enemies go after whoever is closer, each of you gets your own health bar and lives, and it’s only game over when you’re both out.
- 1 PLAYER or 2 PLAYERSPress START and the title menu offers 1 PLAYER, 2 PLAYERS and OPTIONS.
- Options on the title screenPress START on the title and a menu pops up with OPTIONS right on it. The one you’re on is bright yellow with a >, so you always know where you are.
- Continue where you fellUse a continue and you’re right back on your feet on the same spot, with full lives, a jingle and a note saying how many continues are left.
- Stage editorSee every round in parts with a map of its waves, then pick who shows up, where they walk in from, when, and at which difficulty levels.
- Enemy toughnessEasier, Normal, Tougher or Brutal for everybody at once, or set each enemy and boss on their own from 25% to 400%.
- Enemy damageSet how hard every enemy and boss hits you, from 25% to 400%, on their own page.
- Thrown enemy damageSet how hard a thrown enemy hits the enemies it crashes into, from 25% to 400%.
- How the game gets harderPick how fast it ramps up, how far it goes, and how much it backs off when you lose a life.
- Final Fight Guy difficultyDo it the Final Fight Guy way: one GAME LEVEL in the options menu, EASY, NORMAL, HARD or EXPERT, and it stays put the whole game.
- ContinuesStart with anything from 0 (no second chances, tough guy) to 9.
- Starting livesPick how many lives the game starts with. It’s still changeable in the options menu.
- Cheats: unlimited lives and continuesUnlimited lives and/or unlimited continues, for player 1, player 2 or both.
- Less slowdownThe game reads the cartridge at the faster speed the SNES always had, so busy fights stay at full speed, with one player or two.
- Clearer options menuThey now read START LEVEL and GETS HARDER, or any words you like, and the tool explains what they do.
- Pause screen: what changedPress START and the screen goes black with this round’s changes: every enemy by the name they have in your game, with their health and hits next to the original (red = stronger, purple = weaker), the game changes (lives, continues, cheats, the randomizer seed, the difficulty level) and each player’s lives left.
- Lives on the health barMake it CODY x3, or just CODY 3.
- Stage musicPick the song for every part of every round, and for the bonus stages.
- New outfits for Cody and HaggarGold, Shadow, Ghost and more, with a picture of each, or pick every color yourself.
- New colors for Mad GearEvery enemy and boss has a page with their pictures, and you can recolor any of them.
- Rename everyoneRename every enemy, boss, weapon, food and treasure, plus Cody and Haggar.
- Rewrite the storyWrite your own opening story and fighter profiles. Make the phone call a pizza order if you want.
What you can change
The parts of the game you can edit.
- The HeroesCody and Haggar: every picture, their names, the lives sign and their colors, with ready-made outfits. Plus how hard a thrown enemy hits.
- EnemiesA page for every enemy: pictures, name, health, damage and colors.
- BossesThrasher, Katana, Edi.E, Abigail and Belger, with the same kind of page.
- StagesEvery round in parts: a map of the waves, who shows up where, when and at which difficulty levels, and the music for each part.
- Items and more namesWeapons, food, treasure and everything else the game names.
- StoryThe opening story and the fighter profiles, line by line.
- Lives and continuesTwo players at once, Less slowdown, Continue where you fell, how many continues you start with, your starting lives, and cheats (unlimited lives and continues).
- Options and difficultyOptions on the title screen, clearer menu words, and how the game gets harder.
Super Nintendo (SNES)v1.23.1Beta33 things you can do
Arcana (SNES) ROM Hacking Tool
For Arcana
Make your own version of Arcana for the Super Nintendo. Change the monsters, equipment, spells, EXP and level-ups, shops, maps, encounters, story text and pictures, and build your own dungeons with save points, inns, merchants and story events.
New features you can add
Things the original game never had. Flip them on in the tool.
- Save inside a dungeonyou can put a Save sign on a dungeon wall and save right there in File 1, 2 or 3, with your own words.
- Inn inside a dungeonyou can put an Inn sign on a dungeon wall that heals the whole party, for the price and words you pick.
- Merchant inside a dungeonyou can put a Merchant sign on a dungeon wall that sells one item you pick, for the gold and words you set.
- Story events on any squareyou can make any square start a scene: show messages and let Teefa, Salah, Darwin or Axs join or leave, once or every time.
- Edit your own mapsyou can open passages through walls, recolor floors, change chests, move stairs and exits, and pick where you arrive from town.
- Bosses and forced fightsyou can choose which monster each boss or forced fight starts, and where it stands.
- New monster groupsyou can build new groups for a chapter, up to the game’s limit, and pick which ones show up on each floor.
- Spells learned by levelyou can pick which spell each of the nine characters learns, and at what level.
- Shop stock by chapteryou can choose what every chapter’s weapon and item shop sells. The “who can equip” letters update to match.
- Rename a character everywhereyou can rename a character once and see the new name in battle, menus, portraits and story text.
- Cast spells from any equipmentyou can cast the spell on armor, shields, amulets and rings from the same battle menu.
- Keep leftover EXPyou can keep leftover EXP toward the next level, so a big win can give several levels at once.
- FastROM speed-upyou can run the game at the faster cartridge speed (kandowontu’s patch).
- Buy many cards at onceyou can pick a card, then press Up or Down to choose how many (1 to 9) and A to buy them all at once.
- Skip the opening logo, crawl and storyyou can go straight to the title screen, and start New Game right in chapter 1.
- Axs joins without the sliding cardyou can show only the talking card when Axs joins.
- Darwin keeps the dungeon musicyou can keep each dungeon’s own music, whoever is in the party.
What you can change
The parts of the game you can edit.
- Monster statsLevel, HP, EXP, GP, strength, intelligence, endurance, alertness, spell and weaknesses for all 80 monsters.
- Monster names and copiesRename monsters and copy one monster’s picture, colors and behavior into another slot.
- Monster picturesSee every frame of a monster’s animation, redraw it pixel by pixel, recolor it, or import and export PNG files.
- Weapons, armor and ringsPrices, power, who can equip each one, crit rate, race and element bonuses, spell cast and names.
- Spell dataMP cost, power, accuracy, where it can be used, targets, element and sound for every spell.
- Character names and classesBattle names, menu names, the portrait name and the class shown on the status screen, for all nine characters.
- Item, card, town and dungeon namesRename items, cards, elements, conditions, towns and dungeon floors.
- EXP curve and level-upsThe EXP needed for each of the 60 levels and the stat gains at every level for each character.
- Healing items and pricesSleeping Bag, Tent, Herbs, flasks and honey boosts, bar and card prices, inventory limits and the random encounter rate.
- Floor colorsRecolor a whole dungeon floor, or give every floor in a chapter the same look.
- Treasure chestsPut chests on a floor and choose what is inside.
- Stairs, exits and arrival pointsWhere stairs and exits lead and where you arrive when you enter from town.
- Random encountersWhich monster groups appear on each floor.
- Story and battle textEvery story scene by chapter, the new-game crawl, the ending and your own map events, with a preview of each screen.
- Character cardsRedraw each character’s card and recolor it, or import a PNG.
- Save patchSave a BPS patch to share, or a ready-to-play ROM, and see exactly what changed.
Super Nintendo (SNES)v0.68.0Beta
FF4 Creator Studio
For Final Fantasy IV (Final Fantasy II US)
Make your own version of Final Fantasy IV: change the characters, monsters, maps, story and more, then save it to play or share it as a patch.
Nintendo (NES)v0.33.1Beta
Maniac Mansion ROM Hacking
For Maniac Mansion
Change the words, kids, rooms and rules of Maniac Mansion on the NES, with a randomizer, a story remix and share codes.