144p HDR!.. but still 30 FPS and blurry, because fuck you. Twitch doesn’t care that you’re streaming a Game Boy game in monochrome greeige. It’s gonna be choppy and artifacted unless people stream it in 1080p, since resolution and bitrate are inseparable, like subtitles and audio.

Anyway.

I’d recommend a character platformer with a ton of movement options. Like how Mario 64 is fun to fuck around with, even in a nothing room. Model the player as a state machine so there’s a clear action when you jump out of a slide-kick versus jumping out of a backflip. Complexity is fine so long as it’s reliable. Give people weird tools and then build levels that require them.