This is a PC game. A very good and big PC game. On mobile. Absolutely worth 5 bucks. I played Terraria on PC from beginning to end multiple times. And being able to play it on mobile when I'm away from home is very nice. So buy it, you won't regret it. Probably. I hope so. Controls are a bit weird, but you get used to it. Also the mobile version is a few version behind the PC version but overall a very good game.