You also can walk over 1 block heights, but now you can do that in Terraria too so... yes, it's Terraria, but with mechs, and robots (The cyborg NPC does not count as a robot because it is half human), and space shuttles, and F**KING PENGUIN SOLDIERS FLYING ON UFOs!!!! Yes, very different indeed.
I've recently started seeing your work around, I really like it. As for this one, the way you've done all three of the races here is beautiful. I can't decide which one I like best, and you've really captured them.