It is a simple thread:
Do you make mods for other games? You can also list games you make maps/missions/level etc. to.
My list:
FreeSpace: Renegade Ressurgence, Star Wars Conversion, ITHOV. My best skill is FREDing.
Jedi Outcast/Academy: I had several maps for Jedi Knight 2, and a very few for Academy. Making maps for JKA is rather a 'hobby' by now, I do not test them in game, I only build the world itself in the editor.
StarCraft: I liked making starcraft maps. I published numerous Skirmish maps and some non-campaign missions.
Red Alert 2: A few maps and an edited rules.ini*-based mod. (Economical Prosperity - Link in signature)
Quake 3: I made several(around 25) maps for myself. Architecture and lighting are not always good, so I daren't publish them. I rather put stress on gameplay than architecture(so no coloumns in every 2 meters to have something you can stick into).