Epyx was originally the brand name of Automated Simulations. After a few years, the company switched to Epyx only. The company had a huge success in computer games in the early 80's and they decided to publish some titles on console system.
They released 3 games for the Colecovision, and they are relatively easy to find. Epyx also made bilingual boxes for the Canadian market with an extra English / French label. There are two different cases for the Pitstop game. The first one looks like a Coleco case, and the second one looks like an Imagic case with a handle on the top.