UDOOM
UDOOM is a Doom like FPS where you find key cards, open locked doors and blast demons with a shotgun and rockets. It starts right in your browser with no download.
In every level you find the red, yellow and blue key cards, open the locked doors and hit the exit switch to move on. Each level has its own layout, and secret rooms open when you walk into the right wall.
You start with a knife and pick up the pistol, shotgun, chaingun, rocket launcher and BFG on the maps. Weapons you find stay with you into the next level. Bullets, chaingun belts, shells, rockets and energy cells come in boxes of different colors.
There are five kinds of monsters: zombie soldiers that stagger in and bite, imps that throw fireballs, the three headed Pinky that charges, the floating Cacodemon that spits red shots, and the Baron who guards the last level of each episode. Headshots do double damage.
At the end of a level you see your kill, item and secret percentages and your time. The five episodes are Base, Sewers, Hell Gate, Fortress and Hell, with six levels each. Beat the final boss on level 30 to see the ending.
On PC you move with WASD, aim with the mouse and click to shoot. Shift runs, 1 to 6 or the wheel changes weapons, and E opens doors. On a phone, turn it sideways, move with the left pad and drag the screen to aim.
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- Genre
- Free game, Indie game, FPS, First person shooter
- Made in
- 5 days
- Built with
- Three.js (WebGL 3D), Web Audio
- Players
- 1
- Platform
- PC browser (keyboard and mouse), phone in landscape
- Content
- 5 episodes, 30 levels, a boss in each episode
- Difficulty
- Easy, Normal, Hard
- Status
- Complete, ending, progress saved
- Created
- 2026-10-15
- Last update
- 2026-10-19
Good for — anyone looking for Doom like browser games, a free FPS you can play on PC with no download, or a retro first person shooter for a quick run
FAQ
Is UDOOM like Doom?
Yes. Like Doom from 1993, you find key cards, open locked doors and hit the exit switch to finish a level. The maps and 3D art are new, made by Oreum Games, and every level has a different layout.
How many levels are there?
30 levels in 5 episodes: Base, Sewers, Hell Gate, Fortress and Hell. The sixth level of each episode has a Baron boss. Beat the boss of level 30 and walk out to see the ending.
What changes with difficulty?
You pick Easy, Normal or Hard at the start. Easy has 70% of the monsters with 75% health and you take half damage. Hard has 125% of the monsters with 115% health and you take 1.5 times the damage.
Do headshots matter?
Yes. A headshot does double damage and sprays more blood. The Cacodemon has no separate head zone.
What happens when I die?
You restart that level from the beginning, with the weapons and ammo you had when it started. Levels you already reached can be picked again from the episode screen.
How do I find secrets?
Each level has one to three secret walls that open when you walk into them. They hide armor or health, and the end of level screen shows what percent of secrets you found.
