Screenshots
Watch trailer on Steam ↗Castillon
One Up Plus · Published by 2 Left Thumbs · Official site ↗
Last updated 27 Sept 2026
Castillon is a short strategy game where you freely build and defend your castle with magic. Gather resources and explore during the day, then survive enemy attacks at night. Use four types of magic to create the best defence, all in about 45 minutes.
Action, Adventure, Indie, Strategy, Casual · 2026 · More free games
In Castillon, you build and protect your fortress with four types of magical defenses. Explore during the day to gather resources, then fend off nightly attacks in this fast-paced indie strategy adventure from One Up Plus.
About this game
Castillon is a bite-sized strategy game that blends RTS and TD gameplay
As a renown wizard you lay claim to a new land to build your castle. But beware, for demon invaders roam the wilds. Grow your castle and kingdom during the day then fight off waves of enemies at night!
Inspired by the base-building and resource management of classic RTS titles like WarCraft 3, the defensive experimentation of GemCraft, and simplified tactics of games like Thronefall and Bad North – Castillon aims to offer a familiar yet unique experience that borrows from some of our favorite titles.
Build and Upgrade
Gather up resources and spend them to expand your base as you see fit. There are no limits on building placements. Plan carefully to protect your castle and survive increasingly challenging nightly attacks. Each morning, you’ll be able to draft a new means of enhancing your hero or base.
Harness Mystical Elements
Utilize the 4 schools of magic: Holy, Arcane, Necrotic and Engineering to defeat your foes. Experiment with different magical combinations to maximize your defenses with unique and powerful elemental Towers.
Defend your Kingdom
During the day you can help your villagers collect resources, focus on building, or venture out in search of loot and additional magic gems. Build homes, farms, towers, barracks, walls and more to fortify your base. Striking a balance between economy and defense is key!
Summary
Castillon is super compact experience. The main campaign is likely to take you 4-6 hours.
You can always adjust the difficulty with modifiers, all whilst chasing clever achievements.
The game has all the hallmarks of a tiny classic RTS base defense. It is crafted to provide the same fun but distilled in a bite sized and approachable way.
We hope you enjoy building and defending your kingdom!
System Requirements
Will my PC run this? →Minimum
- Requires a 64-bit processor and operating system
- OS *: Windows 7/8/10
- Processor: Intel Pentium Dual CPU E2180 2.00GHz
- Memory: 4000 MB RAM
- Graphics: GeForce 600M / ATI Radeon HD 5450 (1GB)
- Storage: 1000 MB available space
- Sound Card: Yes
Recommended
- Requires a 64-bit processor and operating system
- OS: Any
- Processor: Any
- Memory: 8000 MB RAM
- Graphics: GeForce GT 730 (1Gb) / Radeon R7 A10-7700K
- Storage: 2000 MB available space
- Sound Card: Yes
Supported Languages
*languages with full audio support
Latest news
Patch NotesOfficial
Demo Update: More magic, and more time!
Hello everyone!This week we have been polishing Castillon, helping new wizards settle in and reminding monsters that walls are not optional.A warmer welcomeThe main menu has new movement and a title reveal. Smoother transitions, updated story pages and better music flow help ease you into the adventure. The Glade also starts with a softer morning look.A friendlier tutorialClearer instructions, better target markers and refreshed prompts make learning the ropes easier. Button and tutorial sounds are softer too. We also fixed missing allies after castle upgrades and problems when continuing a saved tutorial.Spanish and both Chinese translations have received updates.Clearer menusVictory lists completed challenges, with a separate Run Stats screen for more detail. Rune previews show stat gains and losses, while upgrade costs, repair descriptions and locked items are clearer.Build menus and controller navigation have had some attention too.Fewer sneaky monstersEnemies should no longer slip through wall joins or hide inside the castle with your loot. Gates are easier to spot and snap together, enemy paths have improved and the Crystal Golem has a clearer projectile.We also fixed crystal production after loading saves, saved audio volumes and graphics settings.Your latest feedback is helping shape the next round of improvements, including clearer controls and more exciting rune socketing.Thanks for the reports and playtest videos. See you at the castle!Read full article on Community Announcements (Influx)Patch NotesOfficial
Bug Fixes, QOL and UI tweaks!
Castle Cleanup & Creature-ComfortsEnemies no longer squeeze through snapped wall joints or pile up inside the Castle. So your defences hold!Building objectives now guide enemy swarms toward reachable attack points instead of awkward off-nav spots.Checkpoints are more dependable: tutorial runs resume properly, and restored homes keep producing their crystals.Upgrade and repair menus are clearer, with correct costs and tooltips that name the building you’re actually repairing.Gamepad navigation in the build menu has been polished, so every option is reachable.Rune hover previews now show stat boosts in green and trade-offs in red. Much easier to compare at a glance!Difficulty modifiers now clearly show whether they increase or reduce your score.The Crystal Golem’s pink projectile has received a much brighter, larger, more magical makeover.Simplified Chinese, Traditional Chinese, and Spanish localisation received a big polish pass, including previously missing UI text.Challenge descriptions now make it clear when victory is required for completion.Building placement controls are smoother around right-clicks and viewport edges.General tutorial, progression, level-select, worker, pause-menu, and packaging polish across the realm.Read full article on Community Announcements (Influx)AnnouncementsOfficial
Castillon Has Grown—a Lot!
We’ve been having an absolute blast working on Castillon, and we’re so excited to share how much has changed! The game is feeling bigger, friendlier and much more satisfying to play, with new ways to customise your wizard, build your defences and survive each night.There’s plenty here whether you enjoy planning the perfect base, unlocking new toys or watching a huge wave run straight into your carefully prepared defences. Here are ten highlights we can’t wait for you to try:Continue your adventure from the beginning of your latest day, instead of starting the whole level again.Dress up your wizard, choose equipment and spend stat points in a completely refreshed Loadout and Stats screen.Complete level challenges to unlock new weapons, outfits and difficulty options.Summon a loyal spider friend or surround yourself with the new enemy-melting Decay Cloud spell.Enjoy a smoother Draft experience with clearer rewards, reliable rerolls and a friendly introduction for first-time players.Build better walls with snapping, easier rotation and much less fiddly placement.Select groups by dragging with the mouse, then send your troops out together with more dependable commands.Face enemies that navigate the battlefield more smoothly—even when the screen fills with a massive wave.Meet a growing family of fiery new monsters, including the Lava Naga, Lava Rock and Lava Salamander.Explore refreshed menus with prettier styling, friendlier controls, clearer controller navigation and more translated text.Read full article on Community Announcements (Influx)Patch NotesOfficial
Castillon Demo Update: Improved UI, New Spells & Bug Fixes
Hi, Everyone ,We’ve made the UI easier to use, added new spells, and fixed a lot of bugs. We hope you like the new UI design!Read full article on Community Announcements (xgq628)Patch NotesOfficial
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It’s been a hectic week with the demo release and we’re so happy to see so many people enjoying the game!A few bug fixes came in thick and fast and now we’re levelling off a bit so we can start to improve some of the experience thanks to all your feedback.Keep it rolling in and please do tell us if there’s anything you’d like to see in the upcoming builds!Read full article on Community Announcements (Influx)
