Port of ?Isolation? from Commodore 64
Original game by John Dearden, published in Compute!'s Gazette for Commodore 64/128 users, May 1990, Issue 83, Vol. 8, No. 5 (page 48). http://www.atarimagazines.com/compute/gazette/index2.html and http://www.scribd.com/doc/34073935/Compute-Gazette-Issue-83-1990-May#page=50