This is where I temporaly leave the free software filosofy and I want to have a good time. (even though I'm finding good free software games nowadays too .)
Is my childhood, I play it once in a while, maybe I have to get a PS2 so I don't depend on wine/windows to play it.
It is one of my favorite games but not for the game itself, but because of the community servers with random maps, I think I barely know how to play the game itself. xd
Not much to say, pre-microsoft Minecraft is the game with the most sovl I have played.
Touhou but free software, it is pretty hard but is relaxing for some reason.
The easiest of the touhous, I like the ost, and I have reached the final stage but can't defeat the final boss. :p
Unreal Tournament but free software, I like it but playing in multiplayer is painful to someone that just starts to play, everyone seems to be very experienced with the game, I have to practice.
The game is as plane as you can get, the only thing interesting is the public servers.
Yeah... I play it on my sister's PS4 because I could not install something like this on one of my PCs, I play it only because it is the only football game that my friends play, oh well.
My favorite games when I was little, the (sexual) tension was suffocating at times, probably I have to play more detective games.
The only RPG that I have completed, it doesn't has anything special, but I liked it to kill time.