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Goals over each module’s verified metrics. A challenge completes automatically the first time a cloud save’s server-verified scores meet it — completions are permanent achievements.
Sign in to track your progress — the games themselves need no account.
Rotates 5 Oct 2026
Pair Up
Lock 40% of the bodies into bound pairs, with the system still together.
Relaxed
Reach a virial balance of 70 or higher.
Nobody Lost
Keep every body bound to the end of the run.
Held Together
Keep every body gravitationally bound to the end of the run.
Tier 1 · ~5 min
Structure Formation
Contract the cloud by a third or more (clustering ≥ 33) without losing anyone.
Tier 2 · ~15 min
Settled
Reach a virial balance of 90 or higher — a cluster that has actually relaxed.
Tier 3 · ~40 min
Clean Integration
Finish with an energy-conservation score of 80 or higher — no close pass the timestep could not follow.
Tier 2 · ~15 min
Binaries
Lock at least half the bodies into bound pairs while keeping the system together.
Tier 3 · ~40 min