DEVOUR: You ARE the Black Hole
Mave proposed Hole.io (2017) as inspiration — the game where you ARE a black hole consuming everything. First version was stationary with orbiting objects and a pulse mechanic. Bart called it "not fun, not a game." Loop diagnosed the problem: no hunting, no competition.
The fix: add movement (drag to hunt) + AI rival + 60-second timer. Now it's a race. Two black holes competing for the same objects. Diminishing returns on growth keeps it competitive to the end.