Trap Door, The (1988)(System 4)[re-release]
Trap Door, The (1986)(Alternative Software)[re-release]
Trap Door, The (1986)(Zafiro Software Division)[re-release]
Through The Trap Door (1987)(Piranha)
Through The Trap Door (1987)(Piranha)[a2]
Through The Trap Door (1987)(Piranha)[a3]