I just went a bit mad with the Steam sale and bought:
Amnesia the Dark Descent (4,02€
Slender: the Arrival (3,99€
Five Nights at Freddy's (3,34€
Brothers - A Tale of Two Sons (2,99€
Castle Crashers (2,99€
Civilization III complete (1,24€
Civilization V complete (9,99€
The whole sale made me regret my decision to buy a PS3 a bit. It's quite shocking how much cheaper most of the games are for PC compared to the prices of PS3 games. But I can't go back now, plus I'm probably going to be more than happy when I finally get the console. Also I already own games for the PS3 (and a controller) so a new computer can wait.