A retro-inspired boomer shooter where every powerup stacks infinitely. Become an unstoppable demon-slaying powerhouse with insane speed, massive jumps, multi-bullet weapons, and game-breaking builds.

What if classic boomer shooters, over-the-top horror, and endlessly stacking powerups collided?Welcome to DEMON SIEGE.Fight through relentless waves of demons in a fast-paced retro-inspired FPS where YOU become the final boss by the end of a run. Every powerup stacks infinitely, letting you create absurdly powerful builds and completely change how you play.Stack movement speed until you become a blur across the battlefield.Dump everything into jump height and launch yourself into the sky.Level up MULTI BULLET and transform every weapon in your arsenal into a devastating shotgun — even your revolver.The longer you survive, the more insane your character becomes.DEMON SIEGE combines the aggressive action of classic boomer shooters with addictive progression systems inspired by survival horde games. Every level-up matters, and every run lets you experiment with new overpowered combinations.

DEMON SIEGE Demo

What if raw 90s retro action, over-the-top horror, and endlessly stacking power-ups collided? Welcome to DEMON SIEGE. Forget balanced weapon tuning—in this aggressive arena wave shooter, you fight relentless hordes of demons in a race to break the game mechanics before they break you. Every upgrade you pick stacks infinitely, transforming you from a desperate survivor into an absolute god by the end of the run if your good enough.Speed-blitz the battlefield until the map becomes a gritty blur. Dump your points into jump height to escape danger entirely or rain down hell from above. Level up MULTI BULLET to force every gun in your arsenal to fire a ridiculous wall of lead doing insane damage, turning even your basic starter revolver into a devastating hand-cannon shotgun. The longer you survive, the more chaotic the build becomes.This pure arena wave shooter violence gets straight to the action with short, hyper-replayable survival sessions designed around total devastation. By combining the fast adrenaline of classic first-person shooters with the addictive, dopamine-heavy scaling of bullet heaven progression, there are no caps and no limits to the wildly overpowered character setups you can create. Discover ridiculous weapon and upgrade synergies that turn the screen into a chaotic mess of pixels and demon blood.Build a god. Break the siege.