Dear Docnutnut
Thank you for playing Zombie Corp. as well as your input. We checked the code and after some research we found out that this can happen in kind of rare situations. We fixed it on our side. Thx.
Unfortunately we used the "wrong" engine for this sort of game. Unreal Engine 4 is way too powerful and thus too performance hungry especially on a mobile device. We initially knew that this could prove out to be a problem but we were kind of forced to release it because of the accessibility as a game jam submission.
We hope you enjoyed at least the beginning of the game or even the whole idea of the game itself :)
Have a great day!