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SWARM SURVIVORS

In GREX, you are the Swarm. It's a fast-paced roguelite auto-shooter where chaos fills the arena and your body is your weapon.

Every enemy has unique behavior, so survival requires some player skill or a broken build. Often both.

BUILD YOUR PERFECT SWARM

• Kill & Collect – Slay enemies, level up, grab diamonds.

• Genes – Mix types to create unique Grexlings.

• Merging – Fuse genes into higher tiers for more power.

• Passive Items – Strong boosts, always with a cost.

• Level Up – Raise stats to improve Genes & Items.

• Digging – Break the arena floor to find healing & diamonds.

ROGUELITE PROGRESSION

• Unlock Permanent Skill Tree upgrades between runs.

• Grow stronger every attempt.

DISCOVER & UNLOCK

• New Swarm species with unique playstyles

• Rare items, rewards, and genes

• Endless build combinations

(W.I.P. — more content coming!)

FINAL CHALLENGE: "Vanilla Mode"

• Reset Skill Tree & upgrades.

• Start from zero.

• Defeat the final boss in pure vanilla chaos.

GREX blends the chaos of bullet heaven survivors with deep roguelite progression, wild build crafting, and the thrill of controlling an entire swarm instead of just one hero.

Can you survive the cosmic carnage?

Have fun Swarming!

Yours, Mike