Last year, I revisited one of my favorite iOS games, as Team Alto updated Alto’s Odyssey, bringing it to Apple Arcade with new levels, music, and artwork.

It turns out that Alto’s Odyssey: The Lost City was only half of Team Alto’s Apple Arcade project. The new Alto’s Adventure: Spirit of the Mountain returns to the snowy, llama-filled slopes of the original game. People who haven’t ever played Alto’s Adventure will be able to start from the beginning. At the same time, veterans will be able to transfer over their saved progress and immediately begin advancing toward new challenges.

The big difference between the two games is that in Alto’s Adventure, you endlessly glide over snow, rather than sand. Other than that, it’s very similar, with some slight detail changes. (In Adventure, you can capture stray llamas, you run from an elder instead of a lemur, and there aren’t any nasty vine cables that break out from under you.) But they are almost exactly the same in terms of gameplay, as you flip and grind to build up speed and activate the ability to fly via the wingsuit.

Much to my surprise, I discovered that I never quite finished Alto’s Adventure.…