I dunno. Maybe you can send our dude from Germany a controller via European mail, lol. Just kidding, of course. Doubt anyone would bother with that.
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Perhaps. If nothing else and in hopes it helps, I spot that the game detects the anolog sticks just fine when you switch on the "Xbox 360" thing in the options.
It switches off all the keyboard inputs though, so I was thinking, if theres a way for the game to detect the controller and keyboard+mouse inputs at the same time, at least folk like myself could just use steam config or something for the time being.
Still, if ya'll need the funds for a controller I'd be happy to donate to a PayPal or similar C: