Prestige

An ascension mechanic: voluntarily reset buildings/upgrades/points in exchange for a permanent production multiplier that compounds across runs.

Why deferred: Prestige only matters once players exhaust a run — but with upgrades existing for just 2 of 19 buildings, no one reaches a wall worth resetting at. The save-schema question it forces (a prestige currency field) is now cheap on the normalized id-based save (game loop and saves), but the content ceiling still isn't.

Revisit when: all-building upgrades has shipped and the content ceiling is actually reachable.