(first, I would like to say that I do prefer Terraria over Minecraft, but this is NOT a V.S.; this is simply my unbiased take on the "Terraria is a Minecraft rip-off" rant.)

okay, we've all heard someone ranting on about Terraria and Minecraft. STOP. or at least keep it off here. the only things they really have in common is crafting, building from scratch, and zombies. otherwise, they are completely different games. graphics, gameplay, mechanics, difficulty, etc. each one is it's own experience, and I really wouldn't compare them in the first place! Minecraft's 3-D enviroment offers it's own challenge in navigating and survival, while Terraria offers a zoomed out, 2-D view of the terrain around you, which also poses navigation and combat challenges. NPC's add an almost RPG feel to the game, and there are tons of weapons, armor, and accesories. I beleive that Terraria has slightly more to offer, but each has it's ups and downs. bottom line, neither is a copy of the other, but simply inspired some attributes of the other.

that's just my take on this, and right now it's one of my pet peeves.