Mario Kart DS has been influenced by people using a popular cheat device online known as Action Replay. This device allows the user to modify the game's coding to enable things such as unlimited items (Stars, Bullet Bills, Thunderbolts, etc.), play on tracks that are not playable online normally (such as Shroom Ridge and Waluigi Pinball), and even a code where the user wins the race instantly or rapidly fire shells. Action Replay also allows the user to pick battle courses, where players cannot do a normal online race and are left to wander aimlessly. There are cases where the battle courses can freeze other players' DSs, forcing them to power down and reboot. Cheats such as instant win or unlimited items are the main cause of trouble for online play, where players watch helplessly as they cannot win against the cheaters or they disconnect immediately. There are also codes where the user can enable 150cc and/or 300cc speeds for themselves, making it impossible for other players to keep up. Source http://en.wikipedia.org/wiki/Mario_Kart_DS Lat night I played against two Cheaters at the same time, and as described above my DS froze up, this made me very mad! so I have a few questions : Is there any protection against cheaters? Will freezing up my ds harm it?