Something like this could be interesting for Nintendo games. I bet MK8DX is also in the 3 bil+ club when you include the booster pass (though I guess it's tricky to calculate when many of its sales are from holiday bundles over the years). New Horizons and Smash also gotta be 2 bil+ games with their DLC included.
Try out my free game on Steam
2024 OpenCritic Prediction Leagues: