This is a tool meant to help you create new puzzle games you can play on an NES! You can download a rom, or play using the built-in emulator. You can also share your game publicly with a share link!
After creating your first game, a menu of options will appear to the left. A good first place to explore may be the Level Designer.
- No games created. Click "New Game" below!
No game Loaded! |
1.5.0 • Sep 22, 2024 This is just a quick note to share that I was recently alerted that older games shared from the tool had their
share pages broken with the 1.5 release. I released a small web-only fix to this bug today. It has no impact on any other part of the application, so
no new version is needed. Thank you for your patience, and I hope you keep making cool things with the tool!
1.5.0 • Sep 14, 2024 Hello, and thank you for checking out this little tool. It's been two years since the last update, and it's
high time for some new features, don't you think? This release adds some big changes I've been hoping to add
for a long time, and a few smaller treats as well. I hope this release allows you to customize your game more
than ever! With version 1.5, the tool no longer supports the small rom (64kb) feature. This means that games
created will be 128kb, with no option to change it. If you wish to make a smaller rom, you
will need to edit the game's source code to make it fit. This also means you are no longer able to make
games for the nesdev coding competition without editing the source code. This decision was made to enable more complicated features. This feature was costing
a lot of development time, hindering features like sound effects, and didn't provide enough value to warrant
keeping it. If you need this feature, please download version 1.4.4 and continue using it on your own machine. You can export
your game using the "Export" button next to your game on the homepage. To find version 1.4.4, click
the Features
Level End (unlocked)
- when this is present, we will switch regular end tiles to this tile when the win condition for the level is met.Switch
tile that can be activated with the A button. If two tiles are provided, they will flip when pushed.Switchable Block
tiles that will change places with eachother when a switch is pressedOther Settings
page)ctrl
+z
/y
) to the level, hud and various screen editors.Other Settings
page)Bugfixes and other changes
Old versions
dialogpatchable_data.asm
would be inconsistant with generated roms (resulting in wasted rom space)Note on rom size
older versions
link on the right of the homepage. You will also be prompted before a project is
upgraded to the 1.5 format.
1.4.2 • Oct 20, 2022 Hello, and thank you for checking out this little tool. This is another minor update to the tool after the 1.4 release. The application had a few more pretty important bugs, so this release exists to fix them. If you run into issues like these, please do let me know! I try very hard to catch these by testing every
situation prior to release, but I'm one person and this thing has a very large number of different cases
now. I'm always open via email, discord, or anywhere else you see me. I hope to continue to improve the quality of this little app, and hopefully have less "oh no I broke it"
releases like this in the future. Thanks for reading, and I hope you build some cool stuff!Bugfixes
Download this app to run on your own computer, even offline!
Load a game, and developer tools will appear here.