Mark Goodson had to change the game "Blank Check" to "Check Game" because Barry/Enright sued them...
Do we have a source for this?
Just a lot of similar mentions on various fan sites. According to the Golden Road FAQ, Barry-Enright filed a lawsuit, and rather than fight it, Goodson
chose to (emphasis mine) change the name of the pricing game, which is a much different thing than being forced to, and therefore has very little to do with my original point.