Antivirus like Avast may scan the app while initializing in sandbox mode. In most cases nothing will happen and after the initial check you can play the game. However, there are times that after the scan the game will not show up but you will see it in Windows' Task Manager. If this happens, try restarting the computer and run the game. The cause is some LWJGL (Light Weight Java Game Libary) initialization with the jMonkeyEngine (The framework the game is made of). Antivirus like Avast get between an a...