Probe 2000 was a company that tried to break into the video game market in the 80's. The failed miserably, releasing one title for the ColecoVision, (War Room), and finishing but never releasing Pink Panther for the Atari 2600. I am only including this company here for completion purposes, (all of the other Atari 2600 game makers have been noded).
Probe 2000 Games
... Atari 2600