A cheater is someone who does what a game's AI can do, to level the playing field, so to speak.

Some people frown upon the act of cheating. However, if one is, for example, playing a Mario Kart game on 150cc, cheats literally make the playing experience more fair. In said example, this is because both real players and the AI are able to go faster than should be possible, pull items out of their respective asses, and generally be irritating douchebags that non-cheaters cannot possibly win against.

In another example, cheating on a test is perfectly okay[citation needed] because it doesn't hurt anybody[citation needed] in any way[citation needed], unless the exam in question is being graded on a bell curve[citation needed]. Some people have a moral aversion to cheating[citation needed]; this[citation needed] is stupid[citation needed][citation needed].