I have TTWO and EA, both doing great. TTWO is my heavy bet while EA is a recent purchase (several months ago). It is not easy to evaluate video game stocks. It seems TTWO is reaching the peak of the business cycle with no major franchise coming soon. However, the stock has been doing exceptionally good. The cycle has been quite long as it is very expensive to develop and market a franchise game.
GLUU is another winner for me. It is on mobile games and China recently gave it a boost. Also have GameStop. I believe it will go down hill with the downloading by-passing the retail stores. Will not hold it for too long.