Hyper Hippo rebuilt its nine-year-old idle hit AdVenture Capitalist from scratch in 2022, because the old code had stalled every change.
Why: No single bug triggered it. The game's components were so intertwined that changing one system could break another, which Denault describes as "like playing whack-a-mole."
Biggest surprise: The team assumed source code and a working build would make reverse engineering straightforward. Missing design documents and a seven-year-old bug that players had come to depend on proved harder.
Result: Player progress survived several save formats, and the team has kept shipping 9.x updates, with 9.26.1 arriving in August 2026.
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TL;DR of the article, generated automatically.
Hyper Hippo rebuilt its nine-year-old idle hit AdVenture Capitalist from scratch in 2022, because the old code had stalled every change.
Nobody loses their empire.