Devlog
How FutCapitalist is built underneath: the technical decisions that shape the game, written down as they were made.
Why money in an idle game cannot be a plain number
The largest number JavaScript holds is 1e308, and an idle game reaches it in days. When it does, everything turns to infinity at once, with no error and no warning.
September 25, 2026 · 6 min readHow the club earns with the tab closed without melting your phone
Eight offline hours are not simulated second by second. They are worked out in one go, and the result has to match what someone with the game open would have got.
September 25, 2026 · 7 min readThe economy is data, not code
Balancing the game means editing a table and running a simulator, never hunting for constants scattered through the code. What it costs, and what it saves.
September 25, 2026 · 6 min readYou can also just play.
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