Thanks Master_cheese129. Yes, but then it would be good if 2 players can use the keyboard, that requires some adjustments. The project is not in dev at the moment and takes some time to set up the dev environment. I'm busy with other things. I have noted it, maybe later or in a new version.
Ok but what I meant is my arrow keys are tiny so like one person would use the mouse and the other could pick either arrow keys or wasd. But both using the keyboard sounds like a good idea too.
Yes, I did thought about it earlier, but there is also the following problem. I live in Belgium myself. Here wasd is zqsd because of the azerty keyboard layout. Arrows are always good.