Background and Worldview: You are trapped inside the living, breathing glacier “Frostbreath Throat” during an avalanche. The glacier is like a giant creature with a heartbeat and body temperature. You must run outwards, escaping its heart before it “awakens” and devours everything. Ancient Viking spirits are frozen within the ice, drawn by your body temperature.

Core Gameplay: A dual system of “body temperature” and “footprints.” Your body temperature bar will continuously decrease, requiring you to run through geothermal fissures or collect “warmth runes” to restore it. Simultaneously, you will leave temporary footprints behind you, which the spirits will follow. You need to intentionally step into “frost traps” (slowing you down) to erase the footprints, or jump to change the direction of the footprints to confuse the spirits.

Features: “Reflex Dash”—Hold down and slide on the ice to enter a high-speed gliding state, capable of smashing fragile ice pillars, but unable to turn. Dynamic Walls: In some sections, the ice walls on both sides will close together, requiring quick passage. Over 150 types of undead, some appearing only for a fleeting moment when you look back. Hypothermia causes screen frosting and increased lag.

Level Introduction: 888 levels in total. 1. Ice Crystal Precinct (1-150): Learn about body temperature and footprint mechanics. 2. Undead Corridor (151-380): Undead begin to appear and track you. 3. Frozen Lake Surface (381-620): Combine ice gliding and jumping. 4. Heart Chamber (621-888): The maze changes structure periodically; you need to remember the shortest path, otherwise you’ll take a longer route and suffer hypothermia.