Watched it at the weekend and then tried to read up on it afterwards.
As with any movie, some of the truth expanded and twisted to make the movie more interesting. The KGB stuff was essentially bollocks, but was the kind of thing that went on at the time and the power they had. The guy that gave Henk Rogers the contract knew what he was doing and played the 3 groups until he got the right deal and also worked out the Maxwell's were cunts (Robert Maxwell did fly into meet Gorbachev to try and get him to hand him the deal for nothing)
The guy who invented it didn't get anything really from the game until 1996 when the licensing deals ran out. He got a job in Seattle, I think with Spectrum, off the back of it. When the licensing ran out he became the owner of the game again and then started a company with Henk.