Zig has a lot of features that make it really nice for game development. Easy and no overhead C interop of course, good runtime performance, fast compilation. While it doesn't have as much safety as Rust it is at least a half step between C and Rust, with option types and better management of undefined behavior. Zig probably makes more sense as a gamedev language than Rust for single player/non networked games, where a memory mistake isn't leading to leaked data or server exploits.