The crossword solution for the term 'ONE WHO SAYS A LOT IN A GAME' is 'SIMON'. Simon is a character from the popular game show of the same name, which aired in the United States from the 1970s to the early 2000s. The game involved two teams of two players competing against each other to answer questions and complete tasks. The host of the show, Simon, was known for his catchphrase 'Say what you see!' and for his frequent use of puns and wordplay.