Where the snow never melts, something ancient is waking up beneath the ice.
Best on a computer · about 90 MB on first visit · classic browser beta
Subzero is a fan-made monster-catching RPG. Start in Frostharbor, a harbour town of lamplight and winter blossoms, and journey through frozen caves, mountain villages and the neon streets of Oslo.
A secret order called the Dragon Cult has begun chipping "humming ice" from the caves. They say a dragon has slept beneath Subzero for a thousand years, and when it wakes, every creature will be reborn in its original form.





Once per battle, your partner can return to its ancient form through the Origin Band.
Calls from the Professor, your rival and stranger voices as the story unfolds.
From a fisher's cottage to a private island with a mansion. Visit, rest and collect rent.
1 in 1,024 here, or 1 in 512 with the Shiny Charm from Kaldvik's stargazer.
Dress your trainer at Frost & Thread. Every outfit changes your look everywhere.
Real-time day and night, music for every place, walking partners and side quests.
Professor Nordan studies the humming ice and builds a band that lets trainer and partner resonate as one. For a single battle, your fully evolved partner returns to its Origin Form: a new type, a new ability, and a whole new presence.
The Cult wants this change to be permanent, for every creature in the region. You only borrow it for a moment.

Three original partners, each growing into a guardian of the north. Each one stays a single type until its final form, where the cold leaves its mark.






For a thousand years, the Original Dragon has slept under Subzero. The Dragon Cult wants it awake. Nobody alive has seen its true form, and you'll have to earn that moment yourself.
From a palace of ice to a fortress guarded by stone dragons. Every gym has its own look, its own puzzle and a leader who fights with a full team and real strategy.








The full game has been rebuilt in Unity: the same story, region and art, with real lighting, smoother movement and new battles. The first alpha runs right here in your browser, and phone builds come later. These are real in-engine screenshots.








Deep in the Forbidden Forest, a shadow leaves something behind: a small glowing ball, warm as a dream.
It opens a door to another world, where you play as one of your Pokémon, fight through waves of wild creatures, collect power-ups and push further each run. Level up, pick a power-up card, survive five minutes, then face the Dream Guardian. Bring back Exp. Candy, and maybe something rarer.




From Frostharbor's lighthouse to the purple storm of The Veil: frozen fjords, the neon city of Oslo, Sakuramizu Lake, the Dragon Ruins, the tropical Sunwave Islands and the dark Skjær Archipelago.

Subzero is only the beginning. Past The Veil lie other lands: regions of green hills, great cities and old legends, waiting for trainers who reach the end of the story.

Use the Zero Phone to buy houses across Subzero, visit them any time, rest your team and collect rent every hour.







Slots, blackjack, Frost Flip and High or Low, played with Game Corner coins. Cash them in for Pokédollars, rare Pokémon like Dratini and Gible, or powerful moves at the prize counter.









A fan-made monster-catching RPG you play in your browser. New lands, cold memories, stronger bonds.
まだ見ぬ世界へ
You can play from Frostharbor through Route 1, Frost Hollow, Kaldvik, the Day Care road and Oslo in your browser today. The Unity version is a rebuild of this same journey, and your feedback on the beta shapes it.
On phones, turn sideways and use the on-screen buttons.
Leave your email and you'll hear when a new build of Subzero is out. No spam, nothing else.