This is the source code to iProgramInCpp's attempt to recreate Celeste for the Nintendo Entertainment System / Family Computer.
Currently this is a massive work in progress. This means that the game may be either:
- buggy,
- unstable,
- or downright broken.
As of January 25th, 2025, only the first two chapters have been completed.
Development will happen in the development branch, and all pull requests will be pulled
into it. The demo-1 branch will contain the source code for the demo as released on
January 25th, 2025.
If you would like to chat about this game, you can do so in our Discord server: https://discord.gg/JWSUpfCubz
TBA
-
iProgramInCpp - Lead developer
-
livvy94 - "Resurrections" rendition
-
zeta0134 - "First Steps" rendition
-
Persune - Chapter Complete rendition
-
Buttersoap - Sound effects, and first "First Steps" rendition
-
The members of the NESdev discord server for miscellaneous help
-
TFDSoft for support, and also the nightly build workflow
-
Extremely OK Games for creating the wonderful game of Celeste
-
And you, for playing!
To build you will need the cc65 toolchain installed (ca65 and ld65 are used), as well as a posix-compliant
make implementation.
Run the make command to build the ROM for the game.
Certain package managers (Ubuntu, for example) will feature outdated builds of ca65 (ca65 V2.18 - Ubuntu 2.19-1
for example) Unfortunately, it doesn't support all the features that this code base uses.
You will need to get a more up to date version. Compiling from source will work.
Because this is my first project written in 6502 assembly, code quality will vary. If you spot anything unusual, let me know and I will fix it right up!
I have tried my best to make the physics as accurate to the original game as I could, even referencing the officially released Player class code from Celeste. However, some features may not be accurately implemented.
If you know how to write 6502 assembly and also happen to be a keen-eyed player who can notice such things, please let me know with a pull request.
It is important to also acknowledge the NES' limitations. I think I've struck a good balance between accuracy and speed.
This project has been neither created nor endorsed by the Celeste team.
The Celeste IP is owned by Maddy Makes Games, Inc..
The graphics (all *.chr files, except d_font.chr) and music (src/level0/music,
src/level1/music, and src/level2/music) are under a strictly non-commercial license,
meaning you may not use these assets for any commercial purpose.
The game code (src/) is licensed under the MIT license
