[TillE]

Games. The attack surface for third-party input is very limited, and you can just secure those bits rather than adopting a new language for the entire program.

Like, you need to be able to sandbox mods if they're a thing, and Rust's memory safety only handles a tiny part of that.

[tines]

Multiplayer games have huge attack surfaces.

[ZiiS]

Single player games maybe, cheating in multiplayer games can be big business.