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Set two years following the events of The Great Gaias, this stand-alone installment in the world of the Codex Eternal showcases the circumstances surrounding the northern Osirian Empire and their acceptance of a new world order ravaged by war and betrayal.

Gjallarhorn aims to connect the playstyle of the D20 Ruleset and the JRPG in what we are calling a Western Fusion JRPG. Weaving a world where every non-player character has a routine and schedule, we hope to bring a completely unique and customizable experience with every playthrough utilizing choice and consequence.


Two years following the Second Great War, the Osirian Empire wrestles with finding a new ruler. While each faction sees a different future for their people, decisions are made by strength, not through ideals, and only the dead have seen the end of war.
Lost in a strange land you know nothing about, you must forge a destiny in this harsh environment. Every choice has a consequence that could shape the course of history in the coming struggle. Will you pick a cause in the coming conflict or venture out on your own to seek fortune, fame and glory?


  • Choice and Consequence Playstyle
  • (4) Main Storylines with branching endings
  • (6) Main Characters with interweaving plots
  • Fully Customizable Character including attributes and personality
  • (16) Pieces of Customizable and Craftable Equipment
  • D20 Combat and Overworld System with Turn-Based JRPG Elements
  • Job Point and Class System
  • Advanced Skill Equip System
  • Day / Night Cycle with NPC Schedules
  • Multi-tiered Dungeons with Challenging Puzzles
  • Fame, Reputation and Karma Systems
  • Charisma based choices and Skills
  • Cohort and Taming System allows almost any character or animal to join your party
  • Bounty Board and Job Quests
Box Art

Information about


Developer: Horizons End

SP/MP: Single-player
Setting: Fantasy
Genre: RPG
Combat: Turn-based
Play-time: Unknown
Voice-acting: Unknown

Regions & platforms
· Homepage
· Platform: PC
· Released: 2023-01-10
· Publisher: Horizons End