
Well, perhaps the developers expect that some part of the acquired traffic, who doesn’t feel deceived too much, will stay. Why cheat users if they delete the game anyway when realize it doesn't fit their expectations. This called a misleading ad or fake ad - the way some publishers advertise to attract more users. Some of us hate it, the others accept it as a necessary evil but what if you're actually interested in playing the game from the ad because it looks like the next Call of Duty? You click the ad, download the game and then realize that the gameplay has nothing to do with the ad and the game is nothing you believed it would be.

If you were playing free mobile games at least once you've probably seen the mobile ad of other games popping up occasionally on your screen. Misleading ad in mobile games: Playrix, Matchington Mansion, Mafia City
