Leaderboard

A ranking of players by lifetime points or production, surfacing the social platform around the game.

Why deferred: The save is a per-user blob, so ranking needs a queryable score in Postgres — new schema and a write on every save for a game whose state is client-authoritative (trivially forgeable scores). Achievement points already provide a light cross-user comparison surface without new infrastructure.

Revisit when: achievements grow a global points leaderboard (the natural first ranking surface) and there's demand for a game-specific one on top.

All-building upgrades

Deferred — upgrade lines for the 17 buildings that have none, blocked on per-upgrade icon art.

Prestige

Reset the run for a permanent production multiplier — the idle-game ascension loop.