"I'm working on making a digital version," Yuugi said, "But I'm using this to fine-tune the ruleset and mechanics. It's easier to have a physical prototype to work with while I'm still learning how to use KC's solid vision engine."

Gods, and was that an undertaking. Everything was so complex but beautifully designed; sometimes Yuugi just played around with the tutorials -- set up like games with a Seto Kaiba AI -- to get to know the engine better.

It was fun.

He sometimes found himself looking forward to learning...

"This is the most complete version of the ruleset."