a once widely popular 2D game can be played on Linux natively using a couple neat tricks, sad the developers don't do this for us themselves.
Thanks to a forum user called "jesyspa" and his friend they worked on a Mono version which can be found here
, someone else now though has updated it here
to use MonoGame 3 which apparently makes it work a lot better too!
This is all unofficial and you need the "content" folder from an official purchased install, shame the actual developers won't release a Linux version but the community can.
Couldn't get into Terraria myself, seems very much like Minecraft in 2D (from my very limited experience with it anyway).