Operating Systems
Microsoft Windows
Mac OS X
GNU/Linux
A list of games that work natively on GNU/Linux can be found on the Linux Games Database (free and non-free software inside) and on the Steam list, however neither are guaranteed to work on your machine.
Windows games can be run with some success using WINE, check to see its rating here.
Modifications
Digital Rights Management
Common Visual Effects
Ambient Occlusion
Anisotropic Filtering
Anti-Aliasing
Super-Sampled (SSAA)
Multi-Sampled (MSAA)
Coverage-Sampled (CSAA, EQAA)
Morphological (MLAA)
Sub-Pixel Morphological (SMAA)
Fast Approximate (FXAA)
Bloom
Dynamic Shadowing
Tessellation
Triple Buffering
Vertical Sync
Common Resource Types
Recorded Audio
Recorded video
Meshes
Textures
Colour Maps
Normal Maps
Specular Maps
External Links