Not sure you already have it planned but if you are driving up I-25 into Colorado, you might want to stop in Colorado Springs and head over to the Manitou Arcade. It is a large "penny arcade" that has been around since the 50's. Lot's of pins, em games, vids, etc spread out over many buildings and right in the heart of Manitou Springs (next to Colorado Springs).
Probably about 10 mins off of the highway. But they don't stay open late. Definitely worth a look if you have time!