I am experiencing problems with the arrow control keys. It might work for the first battle but then on the next round the up and down keys don't work. It will rotate with the side keys but just won't move forward or backwards. The spacebar button won't work either. Sometimes nothing will work. I just bought this HP Envy WIndow 8.1 with intel 7 quad processor. Dedicated graphics card and 4gb or mb ddr3 memory.