DEMON SIEGE: Retro FPS Bullet Heaven with Roguelite Progression

9/14/2026, 5:35:15 PM

Release date: 7/7/2026

Tags: #action-roguelike #arena-shooter #boomer-shooter #fps #bullet-hell #bullet-heaven #roguelite #roguelike

User Reviews

Score: 100%Positive
Review Count: 18 reviews
Fetched At: 9/14/2026, 5:35:15 PM

Reference prices

Japan

¥ 395 (JPY)

Steam JP

$2.99 (USD)

Steam

Live Store Snapshot

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Japan Price: ¥ 395
Global Price: $2.99
Price in Your Region: ¥ 395Prices as Steam lists them per country. What you are actually charged depends on your Steam account settings.Regional prices checked: 19 Sept 2026
Sale Status: Regular pricing
Price Checked At: 9/14/2026, 5:30:56 PM

Key highlight

DEMON SIEGE is a retro-inspired FPS Bullet Heaven from The Jank Factory, blending boomer shooter movement with roguelite progression. Fight demons, earn gold, and create absurdly powerful builds through infinite stacking

Who this is for

Recommended for players who enjoy a blend of classic FPS action and the endless power-up potential of roguelite elements. Experience the thrill of mowing down hordes of demons and crafting your ultimate build with unique upgrades.

Details

Overview

DEMON SIEGE is a fast-paced, retro-inspired FPS that throws players into the heart of a demonic onslaught. Developed by The Jank Factory, this game channels the spirit of classic boomer shooters while integrating modern roguelite mechanics. Players will blast their way through hordes of demons, collecting gold to purchase upgrades from vending machines. The goal is to create absurdly powerful builds that can 'break the game' through infinite stacking of abilities and power-ups. It's a pure arcade action experience designed for quick, intense sessions.

Highlights

Genre Blend: Combines the frantic movement of boomer shooters with the endless progression of bullet heaven and roguelite elements.
Developer: Created by a solo developer, The Jank Factory, emphasizing a dark sense of humor and old-school design principles.
Core Gameplay: Fight endless waves of demons, earn gold, and buy vending machine upgrades to create game-breaking synergies.

Who It's For

This game is perfect for players who enjoy high-octane FPS action, the challenge of bullet hell/bullet heaven genres, and the replayability offered by roguelite progression. Fans of classic shooters looking for a modern twist with a dash of dark humor will find a lot to love here. If you like experimenting with overpowered builds and seeing how far you can push game mechanics, DEMON SIEGE is worth checking out.

Game Info

DEMON SIEGE was released on July 7, 2026, and is a paid title. It supports multiplayer and is built on the old-school Easy FPS Editor engine. The game proudly states that no AI-generated assets were used in its development. While it aims for a classic feel, players should be aware that performance on Steam Deck or Linux devices may vary and could potentially lead to crashes.