Originally Posted by Leffmann
I think what lordofchaos and Dunny are getting is that it's not just about the speed of the CPU and Blitter and things like that, but that it's easy to underestimate the amount of work needed to finish a game like this.
Writing a complete piece of software is always a lot of work. In this case, a lot of work would go into the items. However, the decompiled C# source code is available, and this makes getting all the items and crafting recipes into a port MUCH easier.
See here: https://github.com/dptug/Terraria