Amazon Indoor Playground has become a new favorite. We have gone three times and each time the kids had a blast. Big play structure like Monkey McGoos. Comfy leather couches for adults (not that I had a chance to sit in them). Trampoline and the usual assortment of toys. No crazy rules. Two clean bathrooms with change tables. Twisty slide in to ball pit. Free WiFi. Will definitely return.
$10 first kid. $7 second. Free strip mall parking. Yay! Pizza place just around the Corner in the strip mall
25 min drive from downtown (in good traffic) but worth it. 1500 Royal York south of Dixon (see map below).