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Global Game Jam is a yearly game jam where developrs from all over the world are able to participate in teams to create a game with a shared theme.

My First Game Jam is an online jam focused on you creating your first game with tools you've always wanted to learn. It's for people of all skill levels to learn something new! Absolute beginners encouraged to join.

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.

Utilizing content created by algorithms rather than human made content. Often utilizes a "seed," a relatively small string that is used to control the randomization algorithm that generates the entire world.

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

http://www.procjam.com/

Related to the process of arranging game maps using a set of tile graphics (often call tilesets)

The graphics that make up a tile map