Game on.

If you aren't already investing in gaming stocks like Microsoft Corp. (MSFT - Get Report) , Activision Blizzard Inc. (ATVI - Get Report) , Electronic Arts Inc.  (EA - Get Report) , or Take-Two Interactive Software Inc.  (TTWO - Get Report) , it may be time to start. With the Electronic Entertainment Expo (E3) coming up, these stocks could be worth a trade or two.

At E3 2018, which starts on June 9 in Los Angeles, Calif., game developers and producers will convene to show off and announce their lineups of games for the next year. 

This year, the gaming giants—such as Activision, EA, and Microsoft—are expected to unveil battle royale game modes in their most popular online multiplayer games.

The battle royale mode has been popularized by Fortnite. It's a mode where 100 players go up against each other in a death-match.

If rivals to Fortnite could pull off battle royale modes, it would offer up yet another reason to be bullish on gaming stocks into the holiday selling season. 

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