It's gonna take you a few hours to grind this one out. If you've played Antimatter Dimensions, you know what to expect. Features gradually gets introduced in a friendly way without overcomplicating the game itself. The grind never stops, but there's no long wait sections like other games, so as long as you're semi-active, you should be able to tackle this game within a day of playtime. If not, that's fine because sometimes you gotta enjoy games bit by bit, even a game this small.
The thing is, it doesn't start off like most games would. "Versions" are this game's prestiging mechanic. You start off with almost nothing but the layers themselves, then adds new gameplay and progression as you move up versions. It feels like you're playtesting the game versions before release, and somehow it's still fun hours into the game. One of the layers even let you have too many layers that they "patched" in the next version. It's amazing. There's also new features like "heroes" and "actions" that keeps the game fresh. It's a grindy game that I thoroughly enjoyed.