Speaking of Pokemon, I think the trend has all but died off now.
Not died off. I think they're at 1/4 of their highest point but it's still tens of millions of people worldwide.
They need some more updates to keep it going. Shouldn't be hard. They've released 145 pokemon but there's 718 or so in the "Pokemon universe". Just release another hundred every 6 months and the pockets stay lined.