In Planet Explorers, it is the year 2287, one of the first colony ships sent out by Earth arrives at the planet Maria, in the Epsilon Indi Star System. During its landing sequence, something appears in front of the massive ship that causes it to lose control and crash into the planet. Some of the colonists survive in lifeboats, but what they find is an unforgiving land filled with creatures ready to outlast the visitors from Earth. Now the survivors must explorer, gather, build, create, fight, and ultimately, build a new home.
The story that I have read is the devs lost the multiplayer part of the original code, I think this is what caused them to move on to other projects. I think I found a multiplayer patch on GitHub, I have not tested it, but here is a link for that as well: https://github.com/radistmorse/PEPatch