Undefined 339 offers a narrative filled with exploration, stealth, and plenty of action across a variety of environments. Join 339 on his journey as he overcomes obstacles and challenges, battles enemies in hostile environments using a variety of weapons—including rifles, pistols, knives, axes, bows and arrows, and EMP devices—and fights to survive.

The "Déjà Vu" section, which begins in 339’s mind, focuses on the character being awakened by Sufi and escaping this endless space. This surreal, abstract, blue-themed section—composed solely of metal blocks—is where the character struggles to find his way and climbs endlessly upward.

It contains objects, spaces, and textures derived from 339’s past memories. With Sufi’s help, 339 attempts to recall his past memories and sense of self through these fragments of memory.