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