Year of Release1987
The Advertising Blurb
Two worlds - the mirror image of each other, touch in space through a Time-Warp.
One is positive, good, familiar - our World; the other is negative, evil yet unervingly familiar.
Their interface - a time window through which objects and beings can pass; contact has resulted in the beginning of exchange.Restore our World - stop the invasion, but do it now, for as the exchange accelerates, the time window grows larger - domination is at hand!