Prehistoric Isle 2 is a horizontally scrolling shoot 'em up released by Yumekobo in 1999 and published by SNK. The player controls one of two types of helicopters. The main difference between them is in the type of weaponry. Both are re-powered by a series of power-ups which are obtained by eliminating the enemies. During the stages several civilian survivors must be rescued, which will give bonus points and power ups before the boss encounters.