
Become a swarm. Think as one. Mutate. Multiply. Overwhelm. A roguelite auto-shooter built around hive-mind powers — craft broken builds, survive the chaos, crush enemies with sheer collective force! All to a thumping trance-techno soundtrack and neon-glow visuals.
In GREX, you don’t play a hero — you command a living swarm.
Hundreds of Grexlings move, fight, and sacrifice themselves as one organism.
You do things no single character could ever pull off.
Swarm AI Combat – Your Grexlings dodge, chase, collide, and intercept automatically.
Body as Weapon – Ram enemies, surround them, shred them, overwhelm them.
Mass Sacrifice & Rebirth – Lose dozens, rebuild instantly, and come back stronger.
Shape-Shifting – Use different shapes and formations to survive.
Genes – Combine gene types to create unique Grexling behaviors.
Merging – Fuse genes into higher tiers for absurd power jumps.
Passive Items – Heavy bonuses with real trade-offs.
Upgrades – Level up, boost stats, and evolve your swarm’s instinct.
Digging – Tear through the arena floor to find healing and diamonds.
Unlock permanent skill tree upgrades.
Return stronger.
Break the game on purpose.
New swarm species that changes playstyle.
Rare items and exotic genes.
Endless builds that change how your entire organism behaves.
(WIP — more on the way.)
Reset Skill Tree & upgrades.
Start from zero.
Defeat the final boss in pure vanilla chaos.
GREX is powered by a thumping trance-techno soundtrack and glowy neon VFX — swirling trails, pulsing lights, and particle storms that turn your swarm into a cosmic supernova.
GREX blends bullet-heaven chaos with deep buildcraft - but the star is your swarm.
Learn it. Shape it. Weaponize it.
Can you control the chaos you create?
Have fun Swarming,
Mike