The Commander Keen Series, 'Invasion of the Vorticons', is one of the best side scrolling games ever made. Commander Keen 2 in 'The Earth Episodes' is the fantastic sequel from Keen episode 1 in a three episode series.
There is a deadly Vorticon Mothership poised above Earth, preparing to destroy every major city with their deadly Tantalus Ray! Your mission as Commander Keen is to reach and destroy each X-14 Tantalus Ray, powered Amoeba. If you fail in your mission, the Earth explodes - so good luck Keen.
