Citadel: Fortress Defense
About Citadel: Fortress Defense
Citadel: Fortress Defense is a action game that runs instantly in your browser. Expect building, castle and defense. It plays in a landscape window and is controlled with keyboard or mouse. It is designed mainly for computers; on a phone, turn it sideways and try fullscreen.
From the developer
Citadel: Fortress Defense is a 3D medieval strategy game in first person. Each day you build your town, then a raid comes. Build walls, gates, houses, farms, sawmills, quarries, towers, barracks, a market and a mage tower. Gather wood, stone, gold and food. Characters: you are the Lord.
Hire knights, archers and mages and control any soldier in battle. Enemies: goblins, bandits, skeletons, shamans and enemy soldiers break through walls; every fifth day a boss arrives. Each raid is stronger: spend renown on upgrades, raise stone walls and expand your land.
Mode: single player endless survival. If the town hall falls, the game is over.
How to play
- WASD move Shift run Mouse look LMB attack build RMB cancel build B.
- Build mode 1-9 and 0 pick building R rotate X demolish 1-9.
- Control a soldier Q E switch soldier G.
- Back to the Lord H barracks T market U upgrades.
Tips
- Spend early upgrades on damage or fire rate; they make every later wave easier.
- Upgrade a few good towers instead of spreading coins across many weak ones.
- Prepare the next order while the current one cooks so customers never wait.
Game info
| Category | Action |
|---|---|
| Tags | 3D, Building, Castle, Defense, Fantasy, Knight |
| Controls | Keyboard, Mouse |
| Players | 1 |
| Screen | Landscape (1280×720) |
| Mobile | Best on desktop |
| Made by | Third-party developer, distributed by GameMonetize |
| Added | 2026-10-11 |
FAQ
How does Citadel: Fortress Defense work?
WASD move Shift run Mouse look LMB attack build RMB cancel build B. Build mode 1-9 and 0 pick building R rotate X demolish 1-9. Control a soldier Q E switch soldier G. Input: Keyboard, Mouse.
Does Citadel: Fortress Defense work on mobile?
It is built mainly for desktop (keyboard, mouse). It may run on a tablet, but a computer gives the best experience.
Do I need to download Citadel: Fortress Defense?
Citadel: Fortress Defense is free to play on KoiArcade with no download and no account. It runs in a standard browser such as Chrome, Edge, Safari or Firefox; the game itself may show short ads.
What games are like Citadel: Fortress Defense?
If you enjoy Citadel: Fortress Defense, try Legiontide Army Runner, Build a Keycap Pyramid, Ashen Watch. You'll find more in our Action games.











