Slay the Spire 2 devs have a radical stance on piracy

Slay the Spire 2's engine choice has shaped the studio's approach to piracy. By 2024 Mega Crit had spent two years building the roguelike in Unity, but the studio switched to Godot after Unity announced it would start charging developers for downloads. Godot is open-source, and because the game was built on it, Slay the Spire 2's source code is publicly viewable.

As of this writing it is one of 2026's biggest game launches, yet anyone with technical know-how can inspect how the game was made — something most projects don't offer until years or not at all. That openness makes it relatively easy to distribute the game without paying, and the early access title seemed to appear on piracy sites almost immediately.

Mega Crit appears unconcerned: lead programmer Jake Card wrote on Reddit, "Honestly, we don’t really," Card wrote.

mega crit, godot, unity, open-source, source code, piracy, roguelike, early access, jake card, reddit