Slay the Spire 2 is one of the year's biggest hits, which is a good time to remember it abandoned Unity because of the dev fee debacle: 'That is how badly you f****d up'

Slay the Spire 2 sold 3 million copies in its first week — built on Godot after Mega Crit abandoned two years of Unity development over the 2023 runtime fee controversy. A concrete reminder that Unity's policy reversal didn't win back every studio it lost.

Appeared in 2026-03-18.