Patches

Official Outcast Patches
Outcast - Patch 1 | 1,3 MB
Outcast - Patch 2 | 8,3 MB
Outcast - Patch 3 | 11,4 MB
Outcast - DVD Patch | 18 KB

Unofficial Outcast Patches
Outcast - Patch 4 | 10,8 MB
Note: Thanks to terence_13 and atomicJo for making this patch.
It should fix the "mud and twon-ha bugs" on newer PC systems.
It also allows you to play in higher resolution (640x480).
This patch should work with DVD and CD versions of the game.
For more information regarding this patch please read this.