River Patrol by Tigervision took the longest for me to obtain. I recall searching for at least five years. When I finally had the opportunity to purchase it, it ended up being lost in the mail. I thought it was gone forever. Finally, six months after that, the person I had bought it from said it showed up undamaged and it was then sent to my home address. What frustrates me the most about this game is when I was a child shopping at Childrens Palace for a new game, I chose Mr. Do over the River Patrol. Man, there were tons of the River Patrol on the shelf and once the store closed down, I never seen it in the box again.