BRIGHTMOOR - An AI Ultima-style C64 game from GloomKeep II creator J5

Here's the latest game 'BRIGHTMOOR', a new Ultima-style retro RPG built from the ground up in 6502 assembly on the robust GloomKeep II engine with the help of AI. The game plunges players into a dark fantasy world where King Mordran, desperate to escape his own mortality, has struck a catastrophic bargain with an ancient force sleeping beneath the earth. As a result of this truce, the kingdom’s protective dawn bell has fallen silent, transforming the monarch into the Hollow King and plunging the realm into perpetual twilight. To restore daylight, a lone hero must venture across a massive 64 by 64 tile world and conquer six inverted black towers known as Gloomholds, which burrow deep into the earth rather than stretching into the sky.

New Gameplay Trailer


According to the website, BRIGHTMOOR blends tactical survival mechanics with rogue-like elements, featuring a dynamic world where the wilderness, roadways, and dungeon entrances shift randomly with every new playthrough. While the six core regions and their respective towns—such as Thornhollow and Dawnhaven—remain fixed, players must rely on local sages and side errands to pinpoint where each subterranean stronghold lies. The gameplay also has a realistic line-of-sight mechanic and a fully simulated 12-month calendar where nightfall dramatically shrinks visibility and unleashes nearly forty distinct regional monsters, from Mere frogmen to Cinder trolls. Delving into the multi-floor dungeons forces players into intense battles against oath-lords who summon reinforcements when weakened, but defeating them yields legendary artifacts like the Sunblade or Starmantle, which are vital for bringing the sun back to the moor.

CREDITS
  • Design, code, art and music mostly by J5, with help from other developers and Claude assistance.
  • On the engine of GloomKeep II.
  • Krill's loader · GoatTracker 2 by Cadaver · Exomizer by Magnus Lind.
  • Monster art after Kenney and Hexany (CC0) and Kcaze's 1-Bit Fantasy Creatures 2 (CC BY 4.0).
  • A game by J5 — youtube.com/@j5retro
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