Invasion

Invasion is one of the six add-on games for the Odyssey released in 1972. It requires game cards #4, #5, and #6 originally supplied with the system.

The game is heavily based on the classic board game Risk. The fantasy world is represented as a number of countries on the included game board, and players try to conquer their opponents' castles. The console is used to battle out attack and defense.

A player can either choose to sneak into the castle by trying to blindly move the player spot to the gates, or attack directly by maneuvering the game ball around the defensive player. Once inside the castle, the player has to try to destroy the tower defense by estimating where the ball spot will land on the screen.