Fractalus is a fan-made remake of the classic Lucasfilm game, Rescue on Fractalus!
Rescue on Fractalus! was originally launched on the Atari 8-bit in 1984. The game involves rescuing pilots while avoiding turrets and aliens.
The new game has been written for Windows, Mac OS and Linux by...
Popular Mac OS emulator system, Open Emu, has added a bunch of CRT shaders, which can be downloaded now.
Open Emu is an multi-platform emulator for Mac OS and more information can be found out about it here.
Below is a sample of how the new filters look:
Standard view, no filter: