My games are being covered up by other games.

Whenever I Play a game and either complete the game or try to play the same game again my iPad goes to a full screen ad for another game company. There are several different new game companies that pop up. After a short period of time, the screen takes me to the Apple app so that I can download this new game. I do not want these new games as they are similar to what I play and I like the ones that I have. I only have two games that I usually play and I want to keep using those games. This has been going on for about two months. I have gone into Settings looking for something that may be wrong, but I cannot find anything to fix this. Someone please help me.