The game looked interesting and I tried it out. Unfortunately, I just couldn't get into it.
I do like Minecraft a bit, but it only sees play about once a month. I'm not really into building big extravagant structures in it. I just kinda explore and try not to die. I bought it about a year ago and still haven't made a proper house and have still exploring the first and only world I generated.
Terraria definitely has more action than Minecraft, but I think I like minecraft better just cause it's more laid back. Good for just milling time and doing some mindless digging and exploring.