Many players and skeptics believed that there were certain similarities between Activision’s Call of Duty and Orion’s gun models.
David Prassel - lead developer
Whether this was the case The Orion Project has been under scrutiny before for much the same reason. But after a lengthy re-development they quickly fixed the copy-right issues and got back to shooting aliens. Which is exactly what they did the last few days.
They started an Indiegogo campaign to keep some income during the DMCA strike. He also - apparently - banned himself from his own Steam page and went ahead and insulted Reddit users for pointing out the gun similarities. But Trek Industries, developers of the game, are pretty well known for using negative media in their favor.
As of today the game is back up on Steam, but many people seem to think that Prassel deserved the maltreatment from Activision - if it really happened - and calling Prassel to “go legit.”