Radiumtaistelu Marsissa (The Radium Battles on Mars) 1947

Designed by the creator of Star of Africa, players travel across Mars reach the island city of Horz to find out the whereabouts of the weapon's blueprint, carved on a wall of an ancient temple. From there the race continues to the desert city of Kalat where the blueprint itself is hidden.

The expeditions can proceed by three different routes: by radium canals, submarine routes, or gas tracks. The game is played without a die with cards corresponding to those routes (radium, sukellus, kaasu).

All three different passageways available - radium canals, submarine routes, and gas tracks - have corresponding cards (radium, sukellus, kaasu). Movement on the board is determined by the numbers and letters on each card. The first place to find the weapon, wins.