"The Touch of Disaster"
Two scientists stumble across a new chemical but have yet to find its use. Enter aliens from another dimension who want to steal it.
"The Doom Game"
Two explorers stumble across a magnificent find, pistols that can find treasure. The draw-back is they will fire three times, two shots to find treasure and one to cause doom...in random order.
"The Weird World of Gilgana"
The Martian Manhunter must save abducted citizens when a idol opens random doorways to another dimension.