RimWorld doesn't work sometimes if you try to start one of its games in a non-English locale. As a workaround, use the included shell script start_RimWorld.sh to start RimWorld in any language environment.

More info here: http://ludeon.com/forums/index.php?topic=540.msg6735#msg6735

Thanks to tester Ash_Crow for finding this and making the shell script. Because I'm terrible at Linux.

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On some systems, the game seems to fail unless you add the -force-opengl command line argument. As a workaround, use the shell script start_RimWorld_openglfix.sh to start the game. Find info on the script from its author here:

https://ludeon.com/forums/index.php?topic=4805.msg236661#msg236661

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If the game won't start, begin here: https://ludeon.com/forums/index.php?topic=4805.0

Cheers!
Ty