Overturn: Mecha Wars is a tournament based game where two challengers go head to head. Tournament consists of 6 classes: Rookie, Novice, Elite, Ace, Grand and Master classes.

Games take place within closed battle fields with the contestants controlling futurist machines that are equipped with a host of high tech weapons. The aim of the game is to blast your opponent using the 19 available weapons, while trying to avoid their incoming attacks, and be the last one standing.

Each of the eight machines has its own unique features with selectable weapons that increase as the player progress through the tournament. The game will also give players the chance the ability to customise their favourite Mecha once parts have been unlocked.

The game can be played by one player or two players (split screen) locally or via Wi-Fi connection (2-4 players). Overturn can also be played by using the Wii Balance board and utilises the Wii remote speakers as well, allowing the player to experience WiiWare games in a unique and exciting way.

・Go head to head in a closed arena in a fire fight to the end, letting lose a barrage of attacks from a range of futuristic weapons.
 
・Customise each of the eight machines, loading them with weapons of your choice ready to take on the next challenger.
 
・Go head to head with a friend locally (split screen) or via Nintendo Wi-Fi Connection (2-4 players) to face off against the best players in the world
 
・Join the world rankings to see how you stack up against the best.
 
・See what it feels like to maneuver a mech by shifting your weight around on the Wii Balance Board!