Installed list:

0 A.D
Abe
Advanced Strategy
Alien Blaster
Amnesia: A Machine For Pigs
Amoebax
Armacycles Advanced
Astromenace
Auriferous
Ball Buster
Battle for Wesnoth
Battle Tanks
Blob Wars
Bombardier
Bos Wars
BygFoot
BZFlag
C-Dogs SDL
ClanBomber
Colossus
Crack Attack
Critical Mass
Crossfire
Dark Places Quake
Dodgin Diamonds
Dolphin Emulator
Enigma
Escape
Extreme Tux Racer
Fish Fillets
FooBilliard
FreeCiv / Mod / Server
FreeCol
FreeDoom
Freedroid RPG
Frozen Bubble
GemDrop X
GL-117
Glaxium
Globulation 2
GNU Backgammon
Gweled
Haxima
Hedgewars
KCheckers
Knights
Kobo Deluxe
LBrickBuster 2
Lincity NG
LMarbles
LondonLaw / Server 
LordaAWar / Server 
Maelstrom
Magico
ManaPlus
MegaGlest
MirrorMagic
Nethack
Netpanzer
NJam
NoGravity
OpenLierox
Pachi El Marci
Pingus
Pioneers / server
Pipe Night Dream
Pipepanic
Planets
Powermanga
Pychess
PySol Fan Club
Quarry
Red Eclipse
Rocks n' Diamonds
Rogue
Scorched 3D
Seahorse Advanced
Shippy 1984
Solar Wolf
Sopwith
Steam 
Stormbaan (sp?)
Super Methan Brothers
Taxi Pilot
Technoballz
The Mana World
Trackballs
Tuxtyping
Ularn
Ultimate Stunts
Vavoom
Warmux
Warzone 2100
Word Wars 
XBlast
XGalaxy
XGalaxy Hyper
XMoto
Xonotic
Albion Online
Endless Sky
Flare: Empyrean Campaign
FlightGear
mGBA emulator
Open Arena
Open Clonk
OpenMW (Morrowind)
OpenRA (Red Alert)
M.A.R.S shooter
OpenTTD (Transport Tycoon Deluxe)
PPSSPP (Playstation Portable emulator)
PCSX2 (Playstation 2 emulator)
Vegastrike
Runescape
Snex9x (Super Nintendo Emulator)
WolfenDoom: Blade of Agony