Random #RetroGaming / #RetroComputing plug: #LaserTank is a freeware puzzle game for 32-bit Windows. You control a tank that can fire a laser, and your goal is to reach the flag to clear each level, while avoiding terrain hazards and anti-tank turrets.

The developer has released the source code and there is at least one Linux port out there, though it's pretty old.

https://laser-tank.com/