Changing operating systems can be quite troublesome as it can also affect the compatibility of some of the apps that are currently installed in the user's mobile device. Apparently, this is a big issue for Apple fans right now especially those who have already upgraded to the latest iOS version, the iOS 9. Some gaming apps developed by Telltale Games like "The Walking Dead" have been pulled out from the App Store because of compatibility issues. 

According to the report from GameSpot, various game titles from Telltale Games have recently been pulled out from Apple's App Store due to incompatibility with the current build of the operating system. The games that were removed are "The Walking Dead," "The Wolf Among Us," "Back to the Future" and "Tales of Money Island" series. Previous titles were also affected, including "Poker Night 2," "Sam and Max" and "Jurassic Park." 

Telltale Games has taken notice of this problem and they have reassured fans that the team is now looking into it and investigating the compatibility issues. That's why they had to pull the titles out of the market, for the time being. 

"If you are running iOS 9 on your iPhone or iPad, we are aware of an issue that causes missing sound or causes the game to freeze during connection, or crash," the developer wrote on their statement, as quoted by GameSpot. "Our team is currently investigating this issue, and we hope to have more information in the near future." 

For those who already have the games installed in their handset, Telltale Games explained, "As long as you have the game downloaded and installed on your mobile device, you will be able to continue playing normally." 

So far, though, the developer still hasn't announced when they will make the mentioned titles available again in the market or any kind of timeframe for that matter.