Game, video and cheat - Ngram

http://books.google.com/ngrams/graph?content=video%2Cgame%2Ccheat&year_start=1800&year_end=2000&corpus=15&smoothing=3&share=

I'm a little disappointed that cheat didn't increase, I'm assuming it's not counting video game magazines. But yes, I've gone for a really geeky one and the results are as expected. Huge increases in the 1980s as video games emerge for video. "Game" seems to be on a continuous increase which is best attributed to increases in commercial sport.