2D platformer with an emphasis on adventure and combat, but plenty of variety in terms of customization, building, and decoration.
+Ungodly amount of content
+Something for everyone - so many different things to do and ways to play, plus Expert Mode if you want a serious challenge
+Steam-integrated multiplayer

Terraria is a complete and polished game and yet the devs are still working on additional updates. I can't recommend it enough, plus at 10 bucks it's a total steal.

2D platformer with an emphasis on adventure and combat, but plenty of variety in terms of customization, building, and decoration. +Ungodly amount of content +Something for everyone - so many different things to do and ways to play, plus Expert Mode if you want a serious challenge +Steam-integrated multiplayer Terraria is a complete and polished game and yet the devs are still working on additional updates. I can't recommend it enough, plus at 10 bucks it's a total steal.