Maxvorstadt: Interesting that Terraria is on the 9th place worldwide. I bought my copy at GoG, and many others will have done this, too. So I guess, that Terraria could be on a higher place in the list, if we take all sales -and not only from Steam- into account. Interesting that an Indie-ish game sells so good!
I'm not that surprised. I sunk insane amount of time into that game. Three characters, each about 150 hours (for two I know thanks to the Galaxy, the first I can only guess). I thought the whole minecraft-like genre was a bit silly before, and bought it on a whim with launch discount for something like $3... almost makes me feel guilty I paid so little, I don't think I ever had a game with better cost/entertainment ratio. If Otherworld makes it here, i'll have a chance to ease my guilt :)