Me and my coworkers are going to have a weekend "gamejam"/hackathon starting tonight but we can't think of any good challenges to try and code - can you guys come up with something we can try and tackle in a weekend?

i don't know if you're into coding or mapping or 3D art -
so here a few: Create a little pseudo 3D (orthographic like pokemon or so) "engine".

Recreate/make your own CSGO map (or other games you like).

Build a walking simulation with a beautiful environment and music maybe?

Make a 2D jump an run platformer with highly dynamic environment.

I don't know what you wanted to hear xD

@jpat82792 were mostly web devs - php, js/jQuery etc. But we've been branching into working on Unity, Unreal, Gamemaker, LibGdx, and a bunch of other random game engine projects. We wouldn't mind trying a recommendation if it was worth giving a shot.

@BambuSource these are fucking awesome ideas, I'll have to keep these in mind. Thanks