Grimrock

The absolute minimum that needs to happen is keybound spellcasting, a spell autocast list might be too much, but at least let us use the keyboard, mouse is slow. It could use the num-pad. From what I can tell the amount of spell components plus how many num-pad keys there are, why not let us use th...

I also experience this. It's like a slight headache/eye pain. I've never had this problem before, either, and I spend quite a bit of time at my computer, so I'm pretty sure it has something to do with this game; the field of vision or the camera movement, perhaps.