Complex sentence: Dynamix, Inc. was an American developer of computer games from 1984 to 2001, best known for their flight simulator, "Red Baron", and their online multiplayer game, "Tribes".
Split into simpler sentences: Dynamix, Inc. was an American developer of computer games from 1984 to 2001. They are often known for their flight simulator "Red Baron", and their online multiplayer game, "Tribes".