UNDECEMBER Rubies & Sellers
Compare reviewed Ruby sellers for LINE Games’ hack-and-slash action RPG, on PC and mobile. UNDECEMBER is one of the games in this wave where the currency genuinely moves: Rubies are the Auction House currency, and the wired offers deliver face-to-face in game or by in-game mailbox, with no login shared either way. Season 12, ‘The Farside’, is the current season. Read the buying guide first.
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MMODude's top pick for UNDECEMBER — trusted by our readers for fast delivery and reliable support.
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Dude’s PickUNDECEMBERRanked #1 of 1 UNDECEMBER Rubies on this page. Strongest area: Trust & Security (4.6/5).
PlayerAuctions lists 4 UNDECEMBER Rubies offers on our check, at $0.011 to $0.030 per Ruby under PlayerGuardian escrow — Rubies are the Auction House currency, spent on gear, essences and consumables. Delivery is face-to-face in game or by in-game mailbox on a 12-hour guarantee — no login is part of the trade.
Know Before You Buy
Trading rules, season dates and the latest patch for UNDECEMBER, from the publisher’s own statements.
The Farside
- Season 12, “The Farside,” launched September 10, 2026 and runs to January 7, 2027 (before maintenance), per the official season notice on LINE Games’ UNDECEMBER site; Steam carries a dated September 10 update change notice for the same launch.
- The season adds the Agony Wave, a roguelike wave-defence mode.
- The cadence behind it is dated and steady at roughly three to four seasons a year: Season 11, The Forge, ran May 14 to September 9, 2026, and Season 10, New Age, ran January 15 to May 14, 2026.
A new season resets where Rubies earn their keep — the Auction House currency is spent on gear, essences and consumables for the current season’s builds, so early-season gear demand is what a Ruby balance buys into; last season’s stock is priced by the new meta, not the old one.
Patch notes & sources
The latest update that matters if you are buying. Checked October 20, 2026. Full patch history →
UNDECEMBER Rubies
1 VENDORRubies are the Auction House currency: they are spent on gear, essences and consumables, and traded for goods on the Auction House. PlayerAuctions is the wired marketplace, with 4 offers on our check under its escrow. Delivery is face-to-face in game or by in-game mailbox — no login is part of the trade, and a seller who asks for your password is offering something other than a Ruby delivery. As with any seasonal action RPG, what a Ruby buys depends on where in the season the economy sits.
Vendor tiers: Legendary 4.7+ Epic 4.4–4.6 Rare 4.0–4.3 Common 3.5–3.9 Poor <3.5 How tiers work
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Latest UNDECEMBER News
All MMO news →Frequently Asked Questions
What are Rubies used for in UNDECEMBER?
Rubies are the Auction House currency: they buy gear, essences and consumables, and they are the balance player trades on the Auction House settle in. Third-party Rubies are delivered face-to-face in game or by in-game mailbox.
Do I need to share my login to buy UNDECEMBER Rubies?
No. The wired offers deliver face-to-face or by in-game mailbox under marketplace escrow, and no login is part of the trade. Current-season context: Season 12, ‘The Farside’, is the live season.
Is it safe to buy UNDECEMBER Rubies from these sites?
This page lists one reviewed seller for UNDECEMBER, PlayerAuctions, scored 4.3/5 in its MMODude review of delivery speed, customer support, pricing and trust. Start with a small first order and pay through the seller’s own checkout.
What's the difference between currency sellers, account sellers and boosting services?
This page lists 1 undecember rubie. Currency sellers deliver in-game currency directly to your account. Account sellers sell established or geared UNDECEMBER accounts. Boosting services have a player carry you through content on your own account.
How often are these rankings updated?
Rankings follow the MMODude score on each seller’s review and are re-sorted whenever a score changes. The review behind this page was last checked on October 13, 2026. The Patch Watch card above tracks the latest UNDECEMBER update (Season 12, The Farside, released Sep 10, 2026) and is re-checked on a schedule.
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