# Fortress Fight Kingdom - Free Castle Card Game, Solo or Online > Build your castle, besiege your rival: a free online card duel in the classic Castle Wars style. Solo vs AI or ranked multiplayer. No download, no ads. Fortress Fight Kingdom (FFKingdom). Language: en. HTML version: https://ffkingdom.recordingbeats.com/en/. Play the game: https://ffkingdom.recordingbeats.com/. Last updated: 2026-09-27. ## 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. ## 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 1. Each turn your stockpiles grow by your production: builders make bricks, soldiers make weapons, mages make crystals. 2. 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. 3. 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. 4. 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. ## 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. ## 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. ## Guides and reference - [Rules](https://ffkingdom.recordingbeats.com/en/rules/index.md) - [Card library](https://ffkingdom.recordingbeats.com/en/cards/index.md) - [Strategy guide](https://ffkingdom.recordingbeats.com/en/strategy/index.md) - [Castle Wars comparison](https://ffkingdom.recordingbeats.com/en/castle-wars/index.md) - [Changelog](https://ffkingdom.recordingbeats.com/en/changelog/index.md)