In terms of gmaes to play that involve smoking, my friend and I, when we smoke together of course, like to carb for each other, and see who can it to catch, and fill up the chamber the best. Ther really isn't any rating system, b/c we're stoned, just "Whoa that was good man." "Yeah, hehe, it was."

As far as games to play whilst high,
Racing gmaes are pretty fun, you need something with lots of colors, and movement. There was a game on the xbox where a bunch of cartoons ran around and killed eachother in cars. That would be prtetty good while high.