About This Demo

This demo drops you straight into the core gameplay loop of O3 - Hollow Descent.

You’ll begin directly in the dungeon: a hostile, ever-shifting environment filled with randomized rooms, combat encounters, and traps. The focus here is on fast-paced, bullet-hell action and procedural exploration. Fight through alien threats, collect loot, and get a taste of the rogue-like systems and moment-to-moment gameplay.

This vertical slice is designed to give you a feel for the atmosphere, controls, and intensity of O3: while the full version will expand the story, environments, and progression systems.

The depths shift and reshape. Traverse ever-changing corridors, evade deadly traps, and fight to escape.

The dungeon is relentless. Dash through waves of destruction, unleash devastating weapons, and carve a path through the unknown.

Uncover the unseen and step beyond the veil. Reveal hidden rooms, open abyssal chests, and exchange remnants for powerful upgrades.