Eyes is an arcade game released in the 1980s. While details about its original release and developer are scarce, it belongs to a genre of vertically scrolling shooters. Gameplay likely involved piloting a ship, shooting down enemies, and navigating various levels. Two distinct versions are known to exist, suggesting potential differences in graphics, gameplay mechanics, or difficulty.  The existence of a 'decrypted' version hints at possible modifications or protection measures involved in the game's original distribution.  Further information about its origins and the company behind it is needed for a more complete introduction. 

Eyes (version set 1)

Exzisus (TAD license)