To The Core is, to borrow its Steam description, "an incremental game about extracting and using resources from planets to buy upgrades." That's pretty much it. I've played it for eight hours since buying it yesterday, hooked by a progression curve that takes you from an ineffectual mining ship chipping at a single planet's rocky surface until you explode, to the leader of a swarm of bomb-dropping drones and aerial bombardment lasers that can travel a solar system and devour any planet to its core in seconds.
It's part idle game, part Vampire Survivors, and it's out now.