You are a sphere in the Mingitilla Arena. Enemies constantly float up from underneath, attach themselves to you and try to attack.
Shoot them! Live as long as you can.
Please note: the Original version of the game is not recommended for people with photosensitivity due to my baffling 2008 decision to make the main menu flash intensely. The NAL Is Alive version (as well as being high resolution anyway) is far friendlier.
Information
System: Windows
Price: Free
Music: Grave Beholders (Original), Joel Steudler (NAL Is Alive Version)
Fonts: Eurostile