Screenshots
Watch trailer on Steam ↗THE DEEPEST CASTLE
Sergey Bobrov · Published by Sergey Bobrov
Content notice: knights fighting with swords, images of blood, images of damage
Positive — 82% positive (22 reviews)
Last updated 28 Sept 2026
You are a mighty knight - how powerful your blows are! And in the very center of a vast forest lies a fortress filled with evil and black magic. There, they raise the dead and hide great artifacts. You decide to explore the fortress and see what the black magicians are hiding.
£3.51
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Price history
Action, Adventure, Indie, RPG · 2026 · More under £5 games
About this game
You are a knight and adventurer. Having learned that necromancer mages are hiding in the forest, you decide to go and see them. Your interest is piqued by stories of the numerous artifacts kept in their lair.
However, within the fortress itself, mighty warriors await, having honed their combat skills over centuries. And even you will have a hard time breaking through their ranks. Numerous secret rooms hidden throughout the fortress contain artifacts, rare weapons, and magic. All this will help you defeat the champions of the dark forces and reach the leaders.
The fight will require fast reflexes, knowledge of your opponent's movements and movesets, and precise timing to raise a shield or strike back. Inside the fortress, you can find various weapons that can change your combat style. However, success in any case depends on your personal skill and precise actions, and to some extent on your luck in discovering the secrets of the dark fortress.
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Project Features.
- Roguelike Element: If the knight fails in battle, the fortress's conquest begins anew. However, you keep any weapons and artifacts you've found.
- Sword Fighting: The combat system emphasizes melee weapons. You'll need good reflexes to time your shield and strike.
- Items: A number of weapons and items are hidden throughout the fortress to aid you in battle.
- Secret Locations: A particularly observant knight can discover secret corridors and halls, sometimes to significant advantage. Sometimes, they lead to their death.
- Destructibility: Sometimes it's just nice to smash something with your mighty sword and see the debris fly in all directions!
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Technical Aspects.
- I wrote the engine code in C++; it's a software renderer. This means that all image rendering is done using the CPU.
- I used Code::Blocks, GCC, VisualStudio, Sleepy, Blender, GIMP, and Audacity to create the code, models, textures, and sounds.
- The project is generally inspired by games from the 90s, the era of early 3D on PC.
- Important: the game's lighting and physics are calculated using the CPU, so the project requires a fairly powerful processor.
System Requirements
Will my PC run this? →Minimum
- Requires a 64-bit processor and operating system
- OS *: 64-bit Windows 7
- Processor: 4 or 6 cores CPU for low presets
- Memory: 8 GB RAM
- Storage: 150 MB available space
Recommended
- Requires a 64-bit processor and operating system
- OS *: 64-bit Windows 7
- Processor: 12 cores CPU for high preset
- Memory: 8 GB RAM
- Storage: 150 MB available space
Supported Languages
Latest news
Patch NotesOfficial
Some changes in the August 9, 2026 version
1. The English version of the text in the narrative journey has been rewritten. 2. Mana regeneration (stamina) has been significantly increased for the blue mage, and slightly increased for other bosses. 3. The ankh artifact now regenerates mana slightly faster. 4. Three code fixes, each of which took several hours, have sped up the soft rendering by approximately 1 percent in some scenes. 5. Two lines instead of three, shortening the wait after a loss and speeding up the start of a new run. 6. Successfully blocking a hit now knocks the player back much less. 7. Several minor fixes, such as increasing the pitchfork radius of the tutorial skeleton, and minor balance adjustments.Read full article on Community Announcements (sb)AnnouncementsOfficial
The Deepest Castle is Coming 23 July (Today)
I’m happy to announce that the game launches today and will be available for purchase on Steam!About the GameAn old-school, hardcore first-person dungeon-crawling slasher inspired by the classics of the ’90s.It’s a relatively small game, but it offers a concentrated evening of intense gameplay and memorable experiences. Add it to your wishlist and set a reminder so you don’t miss the release!Good luck!Read full article on Community Announcements (SQRT Games)Community & EventsOfficial
The Deepest Castle Joins Steam Next Fest!
The Deepest Castle Joins Steam Next Fest! Get ready for: 5 dangerous floors filled with unholy creatures Secret artifacts and powerful weapons Fast-paced melee combat A real challenge for experienced players Descend into The Deepest Castle during Steam Next Fest and see how far you can survive.Read full article on Community Announcements (SQRT Games)
