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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
Faster Than Light, Slower Than c
Beat the external light signal (route advantage ≥ 50) with a locally subluminal traveller.
Tier 2 · ~15 min
A Crossing a Crew Survives
Traversable end to end: survivable tides, no causal breach, and the shortcut actually wins.
Tier 2 · ~15 min
The Antitelephone
Boost a mouth until the shortcut becomes a time machine (causal safety 0). The lesson is the point; the total will not thank you.
Tier 1 · ~5 min