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In the style of games made the 8-bit generation of game consoles & computers, or sometimes authentically created to run on original hardware. Common 8-Bit consoles include the Nintendo Entertainment System, Sega Master System, and the Commodore 64

An 8-bit handheld game console developed and manufactured by Nintendo. Now popular among home-brew creators and modern developers looking to capture a retro style

A game engine and development environment for creating 2D games https://www.stencyl.com/