Echidna
From Sega Retro
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Echidna[1] was a video game development company founded in 1989, in California, by programmer John Alvarado[2] after graduating from University of California (UCLA) with his old friends and school colleagues, Gregg Tavares, Greg Marquez, Ron Nakada and Dan Chang. The company is known for creating TUME, a versatile map editor, which was licensed to many video game development companies in the early 90's.