Blog
Guides, and the hard sci-fi rules and real science behind Cosmos Era
News
Why Cosmos Era has no faster-than-light travel: 3 hard rules
Cosmos Era has three rules: 1 light-year takes 1 real hour, no faster-than-light travel, and the Observer can't tell the main civilization directly.
News
Cosmos Era is now playable in your browser
A hard sci-fi idle game from the Big Bang to an interstellar civilization. Play it in your browser, or install it on your phone's home screen and play offline.
News
Real basis and game lore: how Cosmos Era tells fact from fiction
Every evolution tree node has two fields, "real basis" and "game lore". The first gives years, names, numbers and sources. The second holds everything invented.