I'm a World of Warcraft & Dota 2 player, using "the meta" in that way is pretty common in gaming these days I think. The "meta" is still the 'metagame' in the competitive ecosystem sense, but it also refers to strategies that are considered flavor of the month (FOTM) or just generally safe bets.

So there's "the meta", and there's "that strategy is meta", or "that strategy is the meta."