Terraria is great btw. I bought it on launch day because I don't mind paying that price (even though I realise it's a ripoff) since I am certain I will get more than £12 worth of enjoyment out of it.
I'm having a lot of fun with it. I've not had a great deal of time to game lately so being able to dip in and out of it really quickly is great. So far everything has run smoothly (although there hasn't been too much going on screen) and it doesn't seem gimped in any way. In fact, it's kind of enhanced by the touch controls. Choosing weapons and moving items around is super easy.










