the vietnamese developer removed it himself -- cliff edwardsn who covers gaming.t to play because it is not available. it was the top app in the apple app store. it was again where you navigated and it was similar to super mario brothers. a simple game and very easy graphics. it was ridiculously hard. it was one of those games that people were addicted to the suddenly took off this year. it has been around since 2013. >> the guy said he was making $350,000 per way. >> aren't games supposed to be hard? >> it's one of those games where it is really hard. you can buy your way through on these free games. >> it's like life. >> exactly, you could not. you make your way through this game and there was no way to buy currency or by any cheats to help you through the game. >> in addition to the game being too hard, he was criticized for copying other game makers? >> there were some rumors that nintendo is planning to sue them. nintendo denied that. we don't think that's true as far as we know. designing games. activision can spend $100 million developing game over 2.5 year