Both the Cliff Crash and the Corner Crash maps provide alternate crash site scenarios for Alien Uprising. Cliff Crash The idea behind Cliff Crash is, the right edge of the board acts like a natural shield for the crew of the Pioneer (the crashed space ship); but this is also a curse, as the number of spaces they will have to move to get to debris will be so much farther away! Corner Crash Similar to the Cliff Crash, the Pioneer is naturally shielded on the crash site. However, the far corners of the crash site are really difficult for the crew to reach! Both maps greatly increase the difficulty of the game and should be considered "advanced" scenarios.