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Pixel Art refers to the charming, simplistic, retro/renaissance style of very-low-resolution graphics, such as from the 1977-1995 Atari, GameBoy, & Super Nintendo (SNES) eras.

PROCJAM is the Procedural Generation Jam, an annual event about making things that make things.

http://www.procjam.com/

Games which have short playtimes and can usually be completed in one sitting.