Terreria looks like minecraft, and it plays kinda like minecraft, but the idea is different. Bear with me. There are three different ways that you can play minecraft. You can play the game normally; kill some monsters, explore some caves, make full diamond Armor, make a nice house, and then you have seen everything, and the game gets dull. The next way you can play is to treat it as a creativity toy, and this is where the minecraft is different from terraria. Sure in terraria you can build things, but it is 2D and you are limited by that. As a creativity toy Tarraria can't beat minecraft as a creativity toy. The third way you can play minecraft is to create gadgets. I kid you not, there are people who have in minecreat created computers, huge songs, digital clocks that keep time, huge game play manipulation devices. Minecraft has its own science, and there are people who love it for that. This is another thing that terraria can't do. Minecraft has invented a new genre, a genre that I am going to call super sandbox. Terraria is similar to minecraft because it dabbles in this new genre. Terraria is only about the first type of gameplay, you explore and kill things and build better and better armors but when all that is done you just have to wait for new content because there isn't anything else to do. They look alike but so do crap and chocolate; not to say terraria is crap, it looks like a lot of fun, but minecraft it isn't; and while it may be fun it lacks minecraft's longivity because it doesn't have its own science, and because it is in 2D. I guarantee you that in a year minecraft will still be alive and kicking and terraria won't, or at the very least the months won't be as kind to terraria as they will be to minecraft.