That is incorrect. By definition, a native Linux game is compiled to run directly on the Linux kernel and hardware, without any translation layer.
Using Wine or Proton means you are running a Windows game; these tools are compatibility layers that translate Windows API calls to Linux ones. This is fundamentally different from a native Linux build.
Game engines like Unity or Godot do provide an abstraction layer, but the final exported build is still a native executable (e.g., a Linux ELF binary) for the target platform. The abstraction happens at a higher level, not at the OS system call level like Wine/Proton.
I also want to add that many modern game engines do have great Linux support out-of-the-box, enabling highly-optimized Linux games with less latency and overhead and all of that with minimal development and maintenance effort.
