Quoted from ejg10532626:
Absolutely. Memories of people rolling that bowling ball track ball with all they had, pre track and field. Very timeless game..and pretty rare. Must have been 250 knockoffs over the next 5 years..of all sizes. Will always have a permanent place. Grab..definitely a value riser too!
Only the 4 player version is rare. There were over 10,000 of the two player versions made. It is a neat game over beer. Gridiron Fight is a much better version of that same game but it is much harder to find. Is XO a keeper? You'll probably play it only when company comes over. It is fun but it isn't a "great" game. Irritating Maze is a very medicore game that I would jump to pickup in a dedicated cabinet with air compressor if I found one even though I know it is more a novelty than a game. Probably the bigger question is 'do you have room for games that you'll probably not play much but it is more for when you have company?'