Shockwave is an NES game whose history and original release details are currently unknown. The gameplay information for this title remains elusive, lacking clear information about the game genre or mechanics.  The (Unl) designation in the title suggests it might be an unlicensed title, meaning it was not officially produced or distributed by Nintendo.  Without more information, determining the developers or publishers behind Shockwave is not possible.

Shockwave (USA) (Unl)

Shinobi (USA) (Unl)