There are many custom game controllers being built all around the world, but we'd like to make a bet, that very few are as disgusting as this one.
This is a custom built DualShock 4 controller made for the release of Resident Evil 7: Biohazard, and it's the work of Romanian engineer Vulpe Andrei, who sent over the following images to Eurogamer.
As you can see, the buttons are bullet casings, the D-pad is made of teeth, and the triggers are now eyeballs with fingers.

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