The Y axis can be inverted on the Input page of the in-game menu. The option is called “HT Invert Y Axis”
The games you have tried so far may be unsupported at this time, hard to tell without knowing what you tried. See this list for games that have at least Z-Buffer 3D: http://www.vorpx.com/games (slightly outdated).
FarCry3 is a tough one. You may have to try several times unfortunately.
If you haven’t done so before, please take a look at the trouble shoot sticky.