For such a simple format, the game has kept me playing for long periods. You are certain you have a good understanding and adequate plan and....%*&%$....out of fuel or oxygen. It is highly variable and challenging. My two wins gave me more satisfaction than dozens of high end and more intricate games. It is a great way to unwind without the high frustration level of other games. You launch, you try, you lose..Nuts!..then you start over without even blinking confident that THIS time you have it figured out. Great times!
