For some players, the game could crash when opening a chest, passing through a door or during a fight. 

These crashes seems to be linked to the way iOS or Android devices manage the allocation of RAM used by applications. When an application uses a little too much RAM, your device automatically closes it. 

We've optimised the game as much as possible, but there still seem to be problems for some devices. We're trying to find a solution, but unfortunately at the moment we can't do much more on our end.