Grand Mountain Adventure is an open-world skiing and snowboarding game that allows players to explore seven huge mountains, each with its own unique challenges and terrains. The game features over 100 different challenges, including Super G, Slopestyle, Freeride, Big Air, and more. Players can compete with others through cross-device multiplayer over Wifi and online leaderboards. The game also includes an advanced trick system with flips, spins, corks, rails, combos, and more. The Winter 2021 Expansion adds three new mountains to the game, including Pinecone Peaks, USA, Ben Ailig, Scotland, and Mount Fairview, Canada.

The gameplay starts at the bottom of Hirschalm, a sleepy ski resort in the midst of the alps. Players can unlock ski lifts by earning Ski Passes through completing challenges. As players advance up the mountain, they have to tackle a variety of challenges like slalom, slopestyle, ski cross, and big air. The game also includes backcountry areas where players can discover hidden challenges and secret Ski Passes.

The game is developed by Toppluva, a small indie studio from Stockholm, Sweden consisting of three snowboard-enthusiastic brothers. Players can connect with thousands of fellow skiers and boarders through the game's community on Discord, Reddit, Facebook, and Instagram.

Overall, Grand Mountain Adventure offers players an immersive skiing and snowboarding experience with stunning graphics, challenging gameplay, and a vibrant community.