I use Steam Big Picture as a launcher for all of my media. I have a ton of shortcuts to ROMs in my Steam Launcher. It's great!

However, I'm having trouble specifically with ROM hacks. I don't know how to make a shortcut in Steam just for a modified game or hack.

For example, I'd love to have Mario 64 multplayer on there, but I can't get it to work.

Does anyone else do this or can you offer any possible insight?

Specs

Windows 8.1 Pro edition 64 bit

I7 4770k

Gtx770 evga