Single Bullet Game
Well, here’s a screenshot of what I’ve gotten done in the first 24hrs so far:

I really wish I was further along, but this will have to do. I feel like quite a few people are going to do something similar with a projectile and having to retrieve it, but OH WELL. I’m pretty happy with the mechanics of shooting and retrieving the bullet so far. There’s a few different variants of the projectile you can switch between after getting powerups like a piercing one, a bouncing one, one that floats near whatever it hits, etc. So there’s quite a few different mechanics at work right now. Also, you build up a sort of “rage gauge” (not shown in HUD yet) as you kill enemies which allows you to teleport to your bullet after you hit something. You have to keep killing things to refresh it, so if you’re good at aiming, you can just chain enemy kills and teleport all over the place. It’s pretty fun!
I also refined the movement mechanics a little more so that wall-jumping refreshes your double-jump as well as your dash, so it’s a lot easier to move around the level quickly to retrieve the bullet. I’ll probably make some timed sections to force the player to move and aim much more quickly, because otherwise you can just spend all day lining up shots, and it’s not as fun as zooming all over the place.
Now I’ve just got to add more enemies, level hazards (for both the player and the bullet), an actual end boss, and a hopefully more art. I’m pretty lacking in the art department since it’s been a long time since I’ve done anything with it, but it doesn’t look TERRIBLE so that’s good enough for now. What I really need are some interesting designs/mechanics for the enemies. Time to brainstorm again!