This is a place I can't wait to come back to. If you're into pinball, even only a little, you will have a great time here. They have everything from old machines to practically brand new ones (like the guardians of the galaxy machine).
One of the coolest machines they have is a prototype machine that was built in the 90s and ended up never being actually produced. It's along the wall by the entrance and is circus themed. It's pretty easy to identify due to the fact that it isn't as long as a typical pinball machine.
Personally, my favorite part was finding machines that featured my favorite TV shows and movies and getting to play those. It's honestly just really cool to see what is picked to be in the machine and all of the little intricacies like catchphrases and music that is incorporated.
If someone in your group isn't completely into pinball, there are also retro arcade games spread throughout along with crane machines and other prize machines.
There is no cost to get in to the Pinball Hall of Fame, and every machine costs $0.25-$1.00 in quarters to play. There are change machines, so don't worry about needing a ton of quarters immediately. A couple of the machines take nickels, so if anything maybe make sure to have a couple of those on hand.
I can't wait to come back here and bring friends and family to play all of the awesome machines.