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You can fly in other games too (even the more popular ones). However you get banned in them for doing so. AV bans players as well.
You will see the above has the player shown in these two videos below, one shot by the cheating player themselves.
Players that recorded him:
His recording and gloating about never getting banned (and he did get banned according to the banhammer):
It's rare to see both sides of the coin and the outcome.
The definition of insanity: doing the same thing over and over expecting different results.