Have you seen the explosive move in Activision Blizzard (ATVI) lately?

For those of you who watch the Philadelphia Fusion -- owned by Comcast Spectacor, a subsidiary of Comcast (CMCSA) -- perhaps the move comes as little surprise.

No, the Fusion isn't an MLB, NBA or NHL team. And don't mix it up with the NFL's Philadelphia Eagles, a favorite of TheStreet's Jim Cramer, which has an important playoff matchup against the Atlanta Falcons on Saturday.

Give up? The Fusion is a professional e-sports team playing the popular video game Overwatch, a game made by Activision Blizzard. Shares are enjoying a nice rally on Friday, up 1.6% to new 52-week highs. The stock is adding to its breakout gains from Thursday, Cramer pointed out on CNBC's "Stop Trading" segment.

Activision Blizzard and Comcast are holdings in Jim Cramer's Action Alerts PLUS Charitable Trust Portfolio. Want to be alerted before Cramer buys or sells ATVI or CMCSA? Learn more now.

Activision isn't the only one jumping higher. Take-Two Interactive Software (TTWO) is up 0.65% on the day and hit new 52-week highs on Monday. Even Electronic Arts (EA) continues to bounce back, up 0.7% Friday and more than 7% for the year.

"This e-sports business is for real," Cramer added. While many don't understand it -- people who watch others play video games -- the expectations are pretty high for the trend over the next few years.

Further, it will likely become a notable NCAA sport in the future. While Cramer acknowledged that "I'm obviously early on that [call]," he doesn't appear to be wrong. Already we've seen scholarships handed out for video-game teams.

This is really something to watch, said Cramer, who also manages the Action Alerts PLUS charitable trust portfolio.

Activision Blizzard stock closed at $70.36, up 1.62% Friday. 

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