There was a youtube video that analyzed those game ads and I think they found that the games being shown in the ad are mini-games within the real game.
Supposedly the ads need to be based on some element of the game, so what they do is they make mini-games and use that as advertising material. It's all a tactic to get people to their actual game.
Supposedly the ads need to be based on some element of the game, so what they do is they make mini-games and use that as advertising material. It's all a tactic to get people to their actual game.
It's basically bait and switch.