Need to check this place out. http://www.gallopingghostarcade.com/ $15 gets you in all day. All the games are set to free play.
We went here a few weeks ago, this place is awesome!!! Every video game you could want for free play, we played NBA Jam and lost our shit like whoa. Seriously if you live in the Chicago area and have an afternoon to burn this is the place to be.
There was a place called Nickel City too that did this but I don't remember them having NEARLY as many games and I think they were farther out too. Gotta go hit this up soon!
Indeed nickel city is still there, forgot the exact town by right by Northbrook. They have the free section in the back with Neo games etc.. and their "newer" game selection is never that hot with the only highlight be the latest SF or Tekken game.