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Mathias De Loore was a TI-Basic programmer for the TI-83 and TI-83+ graphing calculators.
(Screenshot of Arcade)
He released some high-quality TI-Basic games for the TI-83 and TI-83+ including Arcade (a 3D first-person shooter), Laserfight (shoot the target before getting killed), Mshearts (calculator version of Hearts card game), Msmines (calculator version of Minesweeper), and Snake (classic snake game based on XprO's Xsnake).
He was only active in the TI community for a short while (just 2003). He had his own personal TI site hosted on the Dot tk domain (URL: http://www.madelo.tk).