I recently picked up OTYS for 1/2 price. OTYS is a solid game which had some production issues (board warping causes pieces to slide around a lot). So I quickly whipped up a fix in Fusion360. This Board Overlay and Player Mat addresses these issues.
The Player Mat fixes the problem of the Hacker and Mechanic Technicians sliding due to board warping. It has layered slots for the Technicians, as well as spaces for the Key tokens and bins to hold Credits and Batteries.
The Board Overlay fits over the lower right corner of the board, and has holes for the resource cubes and Reward tokens. It is designed to allow the Hacker and Mechanic Technicians to slide freely, if not using the Player Mat.
Designed to not need supports. Print the Board Overlay upside down. The scale is designed to be printed at 0.15mm.