"A space race through the numeric maze of a computer charted galaxy! A fascinating electronic addition game for all ages"

Strange small logic game where each player must reach other player's planet first. The player from the planet ODD tries to reach the planet EVEN before the player from the planet EVEN reaches the planet ODD.

The movement principle is as follows: the EVEN player may move only to a square whose number combines with ODD's last move to total to an even number. ODD may move to a square whose number totals to an ODD figure when combined with EVEN's last move...

In fact the Odyssey is almost only used for moving electronic chips on a playing board (the plastic overlay).