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Ludum Dare is a 48 and 72 hour game making competition globally hosted twice a year publicly on the internet for anyone to participate. The 48 hour version is strictly for solo participants, while the 72 hour version is relaxed bit with more time and no restraints on team size and source code usage.

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.