Zig won't dis-allow any correct programs, zig would compile faster, and zig does appear to be simpler even though in principle you could come across specific zig programs that aren't simple due to doing crazy metaprogramming.

If I imagine a world where Zig is 1.0, and has the same tooling/ecosystem as Rust, and I want to make a single player game from scratch, I would probably pick Zig over Rust, and Zig over C or C++.