This may sound funny but I feel games would lose a lot of fun if they were all written in rust and had classes of bugs just not available to them. For better or for worse quirks and bugs in games have shaped how people approach games, and also have given games charm for decades.
Fortunately for gamers, Rust doesn't do anything to stop physics engines from going haywire or preventing players from clipping out of bounds. A Mario 64 written in Rust still has parallel universes (well, assuming that you carefully translated the out-of-range float-to-short cast as having modulo semantics, an operation which doesn't have any defined semantics in C).
Rust only prevents types of bugs where the game crashes because of invalid memory access, or exploits.