What is Demon Killer?
Demon Killer is a free action game with devil, halloween and killer elements that you can play online in your web browser on Gameziko. It needs no download, no install and no account. You are the only one who can save the world!
How to play Demon Killer
- Press "Play now" on the game screen. Demon Killer loads inside the player; some games take up to 20 seconds and may show a short ad first.
- Kill demons for gold.
- Buy ammo and upgrades in the game menu.
- Hit headshots for bonus damage.
- Use the full-screen button at the bottom right of the player for a bigger view, and press Esc to leave full screen.
Game details
| Category | Action |
|---|---|
| Tags | devil, halloween, killer |
| Controls | Shown in the game |
| Screen | Landscape (800 × 600) |
| Price | Free |
| Download or sign-up | Not needed |
| Distributed by | GameDistribution |
| Added to Gameziko | 30 September 2026 |
Description from the developer
You are the only one who can save the world! Arm yourself with an arsenal of weapons and stop the invasion of demons. Don't stop and use your shooting potential.
Demon Killer: frequently asked questions
Is Demon Killer free to play?
Yes. Demon Killer is free to play on Gameziko, with no download and no account needed. Like most free web games, it is funded by ads, so it may show a short ad before or between rounds.
What are the controls in Demon Killer?
The developer's instructions for Demon Killer say: "Kill demons for gold. Buy ammo and upgrades in the game menu. Hit headshots for bonus damage."
Can I play Demon Killer on a phone or tablet?
Demon Killer is an HTML5 game, so it opens in modern mobile browsers as well as on a computer. Its controls were designed mainly for a mouse, so a computer usually gives the smoothest experience.
What games are similar to Demon Killer?
If you like Demon Killer, try Farmers vs Aliens, Heads Mayhem and Silent Assassin 2024. They are action games with similar themes, and you can find more in the Action category on Gameziko.
Good to know
Demon Killer is made by an independent developer and delivered by GameDistribution, so Gameziko cannot change the game or recover lost progress. Any progress the game saves is kept in your browser on this device. If the game does not start, wait up to 20 seconds, allow ads for gameziko.com and try again, or report the game.