Fortress Saga: Idle AFK RPG

Contains adsIn-app purchases
170K reviews
Content rating
PEGI 16
1M+
Downloads
Content rating
PEGI 16
Users Interact, In-Game Purchases (Includes Random Items)
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About this game

Welcome to Fortress Saga, the ultimate Idle RPG where epic battle never stops! Ready for a legend AFK adventure? Battle for victory!
The dark war has begun! Upgrade your moving fortress, summon powerful hero units, master strategic skills, and build the ultimate castle layout.

Enjoy growth with advanced auto-battle & AFK features. Even while you are offline or sleeping, your idle hero, fortress, and rewards continue to grow 24/7. Say goodbye to mindless grinding and enjoy an effortless level up progression system designed for maximum fun. Explore dark dungeon vaults, engage in fierce combat, and witness how a simple recruit becomes an epic hero.
If you love idle rpg games with deep strategy, intense battle mechanics, and endless collection elements, Fortress Saga is your next obsession. Join the afk journey of Cor and Louis today, defeat every enemy, and write your own legends!

▶ Non-Stop Idle RPG Growth & AFK Rewards
Your hero and fortress grow stronger around the clock! This AFK RPG delivers continuous progress through an optimized auto battle system, automatic level up functions, and rewarding hero upgrade choices anytime, anywhere. Collect endless loot, gems, and gold even while you are offline. It’s the perfect idle game setup for players who want high-tier strategic growth without any stress. Start your legend afk arena showdown now and see how easy growth can be!

▶ Build, Upgrade, and Defend Your Fortress
Turn your moving base into an unbreakable, giant castle. Build unique defense facilities, upgrade your fortress parts, and unlock rare skills to repel endless waves of enemies. Match your battle strategy and playstyle by equipping powerful gear and tactical defense systems. This isn’t just a simple action game; it’s a true strategic test where your setup determines victory or defeat in the grand war.

▶ Collect Epic Hero & Strategic Summon System
Assembled the ultimate team of defenders, dealers, tanks, and support hero units. Summon, collect, and combine diverse warriors to unlock powerful team synergies and hidden abilities in this premium hero collection RPG. Enhance their combat attributes, upgrade their weapons, and prepare your hero for challenging boss battle stages. Create the perfect deck of slime and legend hero to dominate the battlefield.

▶ Action Packed Dungeon Raid & Intense Combat
Lead your defenders into mysterious dungeon realms filled with monsters, traps, and massive bosses. Every dungeon clear brings a fresh challenge, stronger enemy types, and more rewards for your hero team. Test your strategy in competitive PvP arena match, climb the ranks, and prove your strength. Every single combat encounter brings you one step closer to achieving total victory and building a true legend.

▶ Stunning Visuals & Vivid Character Chemistry
Enjoy beautifully animated fantasy hero designs inspired by classic art styles. Watch your favorite defenders come alive with dynamic animations, full voice acting, and eye-catching visual effects. The deep chemistry between characters and captivating storylines will keep you fully engaged in this epic fantasy world. Discover their unique skills and backstories as you explore this immersive rpg universe.

▶ Massive Collaborations & Epic Games Events
Take part in special seasonal events and legend crossover collaborations that bring endless excitement! Fortress Saga features iconic worlds and exclusive collaboration hero from global hits like Sonic the Hedgehog (Sega), One Punch Man, Working Cat (Shigoto Neko), Delicious in Dungeon, and the Three Kingdoms Challenge. Meet unique event characters like the idol Devil Pink, complete daily missions, and claim epic games rewards that you cannot find anywhere else. Every single update offers fresh gameplay modes, special dungeon raids, and rare loot drops.

Play this top-tier free idle RPG anywhere, anytime.
Download Fortress Saga now, conquer every dungeon, and lead your fantasy hero to ultimate victory in this epic idle rpg war!
Epic Idle RPG Fortress War! Defend the castle, upgrade hero & battle for victory
Updated on
Oct 20, 2026
Available on
Android, Windows*
*Powered by Intel® technology
Events & offers

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • This app may share these data types with third parties
    Location and Device or other IDs
  • No data collected
    Learn more about how developers declare collection
  • Data is encrypted in transit
  • You can request that data be deleted

Ratings and reviews

159K reviews
Meh28
May 7, 2026
The game is absolutely inundated with pop-ups/ads to spend real money. The team responded politely to my previous review, which I appreciate, but all they did was point out that you don't have to spend money, completely ignoring my point about how constant and predatory the pop-ups are. I opted to uninstall the game because of the frequency.
3 people found this review helpful
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CookApps
May 8, 2026
Hello, this is 『Fortress Saga』. We sincerely apologize if your experience with us left a negative impression despite visiting with excitement. Your feedback has been shared for review and will be taken into consideration. We will strive to make 『Fortress Saga』 a better experience for everyone. Thank you.
Patrick Suwanmena
September 1, 2025
Very good game in general as it includes many roadblocks and different ways to progress through them depending what you focus your time and resources on e.gCompleting all the conquest collection quests for extra collection stats, focusing on heros by upgrading their equipment, level and other factors, collecting hero, cannon, repair cat and fortress skins for their boosts and more. I really enjoy the events and mingames but also please add selectable presets in the arena(I know it's in its beta.
3 people found this review helpful
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CookApps
September 2, 2025
Hello, 『Fortress Saga』. We will carefully review your input and strive to make improvements that provide even more enjoyable experiences in the future. We are committed to delivering even more satisfying services and will continue to work hard to meet your expectations. Thank you.
Kevin Flemming
June 8, 2025
The game itself is quite good. Just a couple of annoying issues, which lower the score for me. People constantly scumming the Arena, by using one overpowered character. The ads often take you to the Play Store without you actually pressing anything, which in turn causes the game to reset and you don't get a reward. Also, some of the ads don't display a close button after it has played, so your only option is to close the game, which as mentioned doesn't grant you a reward.
9 people found this review helpful
Did you find this helpful?
CookApps
June 8, 2025
Hello, 『Fortress Saga』. We will carefully review your input and strive to make improvements that provide even more enjoyable experiences in the future. We are committed to delivering even more satisfying services and will continue to work hard to meet your expectations. Thank you.

What’s new

Update 2.1.20
- Iris's Special Request: Adventures, Dungeons, Raids, new heroes, 10,000 Summon Tickets and rewards as you progress.
- Halloween (Oct 29–Nov 26): dungeon, shop, packs, Skin Summons.
- Pocky Day (Nov 11–25): gifts for 7 login days.
- Reflection Converter, Spacetime Regulator, Effect Preserver: effect values reduced by about 30%.
- Precision Parts' ATK SPD is now shown in total Power.
- Anubis's stacks reset on boss summon.
- Spanish added.