The son of the missionary has ridden in with the horrible news that the mission station is under siege by a man eating lion. Can the player characters effect a rescue?
The clouds of Venus contain huge animals one of which downed the orbital barge VE-124. Can a party trace its way back through the clouds to civilization and mark a trail to bring back help?
The International Settlement on Venus is surrounded by bloodthirsty warriors. Can the Player Character use an experimental underwater craft to destroy the enemy siege batteries?