Psychosis is a side scrolling shooter. When the ship obtains a power up two indestructible satellites that can be positioned above, behind, below, or in front of the ship using the I button appear. Different powerups (in the form of colored orbs with letters in them) change the satellites in different ways. Some allow the satellites to shoot, others endow them with an electric shield. The II button fires your main weapons. The game consists of 5 stages (causes) with a boss at the end of each. The game is started with 3 ships with an extra ship available at every 50,000 points. Psychosis is a one-player game.