Pyramid is an unlicensed NES game released in various regions. The 'Unl' designation indicates it wasn't officially produced by Nintendo or a licensed developer. Hacker inc. is mentioned in the Japanese version's title, suggesting their involvement in the game's creation or distribution. Gameplay likely involves puzzle-solving and the manipulation of blocks in a pyramid structure.  Details about the developers or the specific development process are largely unavailable due to the game's unlicensed nature. The existence of multiple versions (US, Japan, Asia) highlights the prevalence of unlicensed games on the NES market.

Pyramid (Japan) (Unl) (Hacker inc.)

Puzznic (Japan)