BONE EATER

Simple endless game where you hold the button to eat the bones and avoid the stones. That's all there is to it.

No, wait, I can do better than that! Let's see... In a world where the sky is purple and rocks are spontaneously generated through an unknown biological process, you are a Bone Eater, and you are craving some serious bones right about now. Also there's some kind of detestable stocky worm adversary standing on a spiky rock that's higher up than you, and it's conveniently spitting bones out; all you gotta do is get those instead of all the rocks it's also spitting out.

Yep, that'll do it. I can't think of a more accurate description of the situation that's unfolding here. I bet you couldn't, either.

What else... oh, this game was developed in a really ancient version of the Godot Engine (1.1) from like a decade ago, even though it's a new game. You can look at the source code if you don't believe me. It was a memorable week.