Ah, so you're the one to blame for the "loss" of hour upon hour of my kids' lives. It's pretty nice to see them sitting side by side on the couch, each with an iPad, muttering gibberish at each other. Warms this nerdy father's heart. :)

> porting Terraria (the actual game) from XNA to Unity

Can you talk about this? What was involved? Why do it? Major roadblocks? Do you feel it was it worth it?

XNA is limited to MS platforms isn’t it? Is imagine it was so they could port/sell to iOS, PlayStation, Mac, etc.

Monogame is practically a drop in replacement which has multi-platform support/targets. FNA is also effectively the same, with a slightly more "purist" approach.

I honestly just assume that anyone that says XNA in the context of development in the last 5 years actually means one of the modern mono implementations.