The New Season of UNDECEMBER Opens the Abyss Gate

jasonnieva September 07, 2025

The new season for UNDECEMBER brings the desire of players when it comes to challenging content and with it unprecedented season rewards. The highlight is none other than the Abyss Gate. This new high-difficulty dungeon poses a challenge that's even greater compared to the "Chaos Dungeon."

The "Abyss Gate" is a demanding mode where characters won't be able to revive or even re-enter upon death. Players need to defeat bosses to earn rewards that include the exclusive "Abyss Stones", which can only be obtained through this new content. There are also new rewards like Gear Slot Upgrades.

The "Abyss Stones" come in three types which are:

  • Dawn’s Abyss Stone: Amplify the stats of specific Gear types.
  • Destruction Abyss Stone: Enhance the stats of certain unique Gear.
  • Distortion Abyss Stone: Allow for modifications to the mechanics of existing skills.


Other New Content

The new season also introduces two new skill runes which are "Wrathful Blow" and "Toxic Mist." There's also the link rune known as "Chain of Pain" which allows players to enjoy new strategic gameplay approaches.

In addition to the new season, there's also player benefit events. All players get to receive a "Season Promotion Box" to accelerate growth in season mode and offer different growth-supporting benefits and the guaranteed acquisition of "New Transcendent Unique" Gear.

That said, ready for the challenge?

UNDECEMBER is a Hack & Slash game that’s driven by character growth and powerful fighting mechanisms. At the core of this action RPG is an unchanged gaming hero who can obtain strength and skill by defeating enemies. The growth system departs from traditional models as it offers players the ability to customize their build according to individual playstyles.

What sets UNDECEMBER apart from other games in the same genre is the undefined class structure. The game emphasizes player freedom as it allows characters to alternate gears and skills to adapt to varied combat styles. Since there are no gear restrictions or combination limitations, players can wield a sword while being able to cast magic or summon minions with a bow. This leads to an engaging and unique strategic combination. Get UNDECEMBER on Steam now.