What is Fortress Fight Kingdom?
Fortress Fight Kingdom is a free online card game in the classic Castle Wars genre. Two players face each other, each with a castle and a wall. Every turn you play one card from a hand of nine: raise your own castle, batter the enemy wall with catapults and siege engines, or cast spells that ignore walls entirely.
Three resources drive the duel - bricks, weapons and crystals - plus gold as a fourth economy you unlock with the market. 72 unique cards, five leaders with asymmetric starting bonuses, hidden shields to bluff with, and escalation rules that make sure no match drags on forever.
Play solo against an AI with three difficulty levels, or go online: quick match with Elo ranking, private rooms with a room code for friends, a leaderboard, emotes and a friends list. The game runs directly in the browser on desktop and mobile, is installable as an app and available in 20 languages.
What's new
Version 1.36.0 ·
- New main menu: instead of a still image, the battlefield now shows two live castles with flags and effects, rendered just like in a match. On narrow screens one castle sits in the middle; with reduced motion or on slow devices the scene stays calm.
- The start page now introduces the game with a short text and direct links to the rules, the card library, the strategy guide and the Castle Wars comparison.
- The overview pages show what is new in the latest version, with a link to the full changelog.
Features
72 cards, four resources
Build, attack, magic and gold cards with counters, denial, over-time effects and combos. The in-game library shows every card.
Three ways to win
Raise your castle to 100, reduce the enemy castle to 0, or fill one resource stockpile to the max.
Five leaders
Master Builder, Warlord, Archmage, Castellan or Merchant - each starts the match with a different edge.
Solo against the AI
Three difficulty levels, a guided tutorial on your first game, 24 achievements and 21 castle designs to unlock.
Ranked online duels
Quick match with Elo rating, private rooms by code, friends and challenges, leaderboard, emotes, 45-second turn timer with reconnect grace.
Free and open
No ads, no tracking, no purchases. Open source under GPL-3.0. Optional e-mail account sync only if you want it.
Browser, phone, app
Runs in any modern browser, installable as a PWA and playable offline in solo mode. Landscape mode on phones.
20 languages
From English and German to Spanish, Portuguese, Russian, Turkish, Japanese and Hindi - the whole game, including the cards.
How to play
- Each turn your stockpiles grow by your production: builders make bricks, soldiers make weapons, mages make crystals.
- Play one card from your hand of nine - or discard up to three cards to dig for better ones. A Double Turn card grants a second action.
- Attacks hit the wall first; the surplus spills onto the castle. Some spells ignore the wall. Half of a destroyed enemy wall becomes your own wall.
- Draw back up to nine cards and pass the turn. From round 16 the war chest boosts all stockpiles so every match comes to an end.
Three ways to win
- Build: your castle reaches 100.
- Destroy: the enemy castle falls to 0.
- Resources: one of your stockpiles reaches 100.
Screenshots
Multiplayer
The online mode is server-authoritative: the same rules engine that runs your solo games validates every move online, so nobody can cheat.
- Quick match: find an opponent in seconds. If nobody is around, a hidden bot with human timing steps in.
- Private rooms: create a room, share the five-letter code, duel a friend.
- Friends and challenges, a leaderboard with Elo, eight emotes, and a rematch button.
- Guest accounts need nothing. Secure your account with an e-mail address to keep achievements, friends and Elo across devices.
Guides and reference
Everything about the game in one place: the complete rules, all 72 cards, a strategy guide, the comparison with Castle Wars and what changed in each version.
Frequently asked questions
Is Fortress Fight Kingdom free?
Yes. The game is completely free, without ads, in-app purchases or paywalls. It is open source under the GPL-3.0 license.
Do I need an account or a download?
No. Open the page and play. Guest profiles are created automatically. You can optionally secure your profile with an e-mail address to use it on several devices.
Does it work on my phone?
Yes. The game runs in the mobile browser in landscape mode and can be installed as an app from the browser menu. Solo mode also works offline after the first visit.
Is it like Castle Wars?
It belongs to the same genre: two castles, a wall, resources and cards. Fortress Fight Kingdom is an independent game with its own cards, art, leaders, gold economy, hidden shields and escalation rules.
Can I play with friends?
Yes. Create a private room and share the code, add friends in the game and challenge them directly, or meet in ranked quick matches.
How long does a match take?
Most matches last five to fifteen minutes. From round 16 the war chest accelerates every economy, so games end instead of stalling.
Which languages are supported?
20 languages including English, German, Spanish, Portuguese, French, Italian, Dutch, Polish, Russian, Ukrainian, Turkish, Arabic, Chinese, Japanese, Korean, Thai, Vietnamese, Indonesian and Hindi.
Which data does the game collect?
As little as possible: a pseudonymous guest profile, match results for the leaderboard, and your e-mail address only if you secure your account. No tracking, no ads, no data sales. Details are in the privacy policy.