If you can play four games at one time so can Linux.
If you look at the top of this image you can see that I also have Netscape, a terminal window, and the dialup utility running in the background. That doesn't crash the AMD 486, 120MHz, with 32 Mb RAM that this is running on. Almost forgot, add the snapshot applet. That's eight programs running at once on a 486. No problem because Linux is a real multitasking OS.
This is what Netscape looks like on Linux.
Karioke with Calculator and Mixer Controls on Linux.
Corel WordPerfect 8 on Linux.