venv is a package shipped with Python 3, which you can run using python3 -m venv (although for some reason some distros separate it out into a separate distro package, such as python3-venv on Ubuntu/Debian). It serves the same purpose as virtualenv, but only has a su...
That just goes to show how Linux really can perform well for gaming. The performance difference is absolutely insane when compared with their original OpenGL port. Even next to Steam Play, it seems to show that an optimised Linux release can be highly competitive...