Demon Siege

DEMON SIEGE is a compact, retro-inspired Micro-FPS Bullet Heaven built by a solo developer using the limited but intentionally old-school EasyFPSeditor engine.

This isn't a massive 4-hour campaign. Instead, it's a fast experience inspired by classic boomer shooters, arcade score chasing, and modern bullet heaven games.

Fight through demonic hordes, earn gold, buy upgrades from vending machines, and create absurd builds where every upgrade stacks infinitely. Become impossibly fast until your boots catch the terrain on fire, leap across the map, fire walls of bullets, and see just how far you can push the game's systems.

The engine was originally designed for much simpler Wolfenstein 3D-style games, so DEMON SIEGE embraces that retro DNA while stretching the technology far beyond its intended limits. Rather than chase modern graphics, the focus has always been on satisfying combat, addictive progression, and overpowered builds in a retro engine.

Features

• Fast-paced retro FPS combat
• Infinite stacking upgrades that create wildly different builds
• Killstreak announcer with bonus gold rewards
• Vending machine progression during each run
• Free post-launch content updates planned

If you're looking for a polished AAA shooter with huge levels and cinematic storytelling, this isn't that game.

If you love old-school FPS games, indie experimentation, and watching your character become ridiculously overpowered in under an hour, DEMON SIEGE was made for you.