Is is possible to use an external controller for this game? The mouse/keyboard combos don't work for me, I can't get anything done in the game. It's just a spinning picture more or less. I've only played for ten minutes but was unable to get anywhere. Literally.

I experience the same issues. The mouse is way too sensitive to play this enjoyably. Does anyone at GOG help with this kind of stuff or we just left on our own? Steam at least provides some answers to control issues when you post there.