Jack Bros.

The portal between Earth and another mysterious dimension has opened, and the intrepid Jack Brothers have come through for an adventure in our world. Having lost track of time, they now have only one hour to return to their home or be banished forever. Help them battle hoards of loathsome enemies through six electrifying 3-D levels, each with many floors to explore and conquer. This is one phenomenal adventure you can't afford to miss!