Everyone else was making one of these posts so I decided to as well. I've entered a few jams before by myself, hard to put a definite number on it because some jams I spent 50-60 hours working on the game, others I only spent 10. I also used to use Game Maker Studio but since I'm now running Linux on my computer, I'm unable to use it so time to experiment with Pico-8. Definitely looking forward to using it, I love the simplicity yet depth of it.

Game Engine: Pico-8

Language: Lua on Pico-8

IDE: Pico-8

Graphics: Pico-8

SFX: Pico-8

Music: Pico-8

Sleep: Probably, no guarantees