Quake is a fantasic FPS from 1996 that uses proper 3D enviroments. This 3D geometry allows for complex levels with even more complex secret areas and levels. The gameplay is fast paced and has a wide variety of weapons and enemies, each having their own abilities. This version of Quake is a bit broken, the music is missing and the ability to change the resolution is almost non-existent. Therefor I would suggest using QuakeSpasm. This is an engine that keeps the classic Quake feel, but fixes a lot of issues including the inability to change the resolution. Another problem with this version of Quake is that the music is missing. However this problem can easily be fixed by following the instructions on the GOG forum (this also includes instructions regarding QuakeSpasm). https://www.gog.com/forum/quake_series/quake_1_2_quickstart_guide_music_and_source_ports/post1 Due to the fact that the game needs fixing and lacks music (for fix) I rate it 4 Stars, because the gameplay is fantasic and challenging and the after the fixing has a great atmosphere with music from Nine Inch Nails. Worth the money for sure if you're a fan of classic FPS games with well designed level and fun gameplay. Quick summary: Pro's: - Fast gameplay with well designed levels. - Lot's of Secrets. They are very well hidden and need some clever thinking. - A wide variety of weapons that all feel satisfying. - (After Fix) The music is fantastic. A great soundtrack created by the band Nine Inch Nails. Con's: - The music is missing. This can be fixed by following the instructions from the link above. - The resolution can't be changed or is nearly impossible to be changed. This can be fixed by using Quakespasm (See link above).