>I get 90's nostalgia but a movie based on a 30-year-old game?
>But I guess if Sonic did numbers maybe this can too?

My son is 6, and he's a huge Sonic fan. Backpack, lunchbox, the works.

And that's before the movie. He plays everything from the original Sonic, to Sonic Forces and Sonic Team racing. He even likes that wack ass Sonic Fighters game.

He watches the old Sonic cartoons and everything.

Mortal Kombat has never gone away. They're up to MK11 now, and it's a massive crossover spectacle, with editions featuring everyone from Freddy Krueger, to Spawn, to Terminator and Robocop to Rambo.

It's not the media phenomenon it once was, but the game is as big, successful, and relevant as ever.

These movies are trading on the strength of both nostalgia and current relevance. Other long running franchises, such as Street Fighter or Tekken, Metal Gear, Final Fantasy, Mario, Mega Man, etc, could all very easily do the same, because those games all remain a significant industry presence with current games.