There are always two sides of the medal. I remember reading article more than 10 years ago about fantasy writer. This guy wrote some story for one of the larges

There are always two sides of the medal. I remember reading article more than 10 years ago about fantasy writer. This guy wrote some story for one of the largest fantasy publishers and he got $2K for it. Deal was made, all good. It was that until 6 months later when his story turn out to be a hit and the company published it again (they were holding the rights to it). So this publisher came to those fantasy circles hating on the company why they never sent him a cheque since they made probably millions from it. Even if he said himself they had all the rights to it and he agreed on contract as it was - he still was mad that he didnt got more. Instead of building business relationship, trying to release more stories for better fee he chose to hate on them. Me myself as indie game developer I wouldn't sign contract that I am not feeling comfortable about. I am selling all rights to my games to publishers, so I can focus on game development only. If one of the games will become next Angry Birds - oh well, I wont be hating on the company, but I would try to come out with joint deal for sequels. I understand there could be mistake in accounting, but regarding some comments - publishers are not charity company. They are profit oriented. So if you have in your contract "you get paid $50K for exclusive rights" then you get paid $50K and nothing else.