I prefer terraria. Their's just more to do, with crafting different weapons and items where in minecraft there's only one weapon, one set of armor, and three (four?) tools; yes there's different armors and swords, but they all work the same, just with different degrade resistance, Notch didn't even bother to make the appearance more than pallette swaps. The enemies in Terraria are much more fun to fight. Minecraft enemies kill you more easily and aren't even fun to fight (Notch himself admitted that combat in his game is very dull and frustrating right now, damn creepers always spawning right behind me underground.) Last is stability where right now Minecraft crashes on me every few minutes or so. Terraria has yet to crash. I also don't like minecrafts plans to make torches useless, and forcing the player to go to the incredibly dangerous hell in order to get the materials that can make light sources than won't leave you hopelessly lost in the dark underground when they go out. I also never build much more than a house anyway, so building isn't really important to me. I don't have the patience or the creativity to make anything very large or intricate. It was bad enough finding the clay to make a brick house, that stuff is way too rare. I also would appreciate a craftable lava proof suit since it's so easy to dig into lava while digging down and die (happened to me five times, lost five diamond picks, don't carry them anymore.)