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Sandcastle

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Sandcastle screenshot 1
Sandcastle demo launch trailer trailerWatch trailer on Steam ↗

Sandcastle

Bubblebird Studio · Published by Future Friends Games · Official site ↗

Last updated 29 Sept 2026

On a sun-warmed tropical shore, quietly craft a mighty sandcastle. Carve moats, raise towers and walls, then embellish with driftwood, pebbles, shells and seaweed. Gentle tides, soft surf and a calming color palette turn every build into a peaceful, relaxing moment.

Free

View on Steam

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Indie, Simulation, Casual · More free games

Build and decorate your dream sandcastle on a serene tropical shore. With Bubblebird Studio’s gentle guidance, turn simple grains into towering structures adorned with nature's treasures.

About this game

Sandcastle is the ultimate sandbox game. Unlock a variety of tools to gather wet sand, shape towering walls, carve intricate battlements, and engineer elaborate moats designed to withstand or divert the encroaching waves.

No rush, just relax

There are no ticking clocks. Only the slow rhythm of the tide and the warm glow of the sun. Discover secret treasures washed ashore or buried deep into the sand, each adding a touch of personality to your sandy masterpiece.

Physics simulation

Beneath the whimsy lies a unique water and sand physics simulation that brings your creations to life. Sand compacts, crumbles, and holds its shape depending on moisture and pressure, while waves flow, pool, and gently erode your walls just as they would in reality. Carve too thin and a tower may slump; reinforce with damp sand and it will stand proud against the tide. The result is a tactile, authentic sand castle crafting experience that feels just like building one on a real beach: sun-warmed, hands-on, and wonderfully satisfying.

Beach customization

Collect starfishes to unlock customization options: Sand type, beach layout, size... Give your beach its own character and charm. Peaceful atolls ringed by turquoise waters, quiet lagoons with gentle shallows, sweeping sand barriers shaped by the breeze, and winding deltas where little streams meet the sea. Every shoreline offers a fresh canvas, inviting you to build, decorate, and relax in a new seaside setting.

Features

  • Beaches with unique water and sand physic simulation

  • Many tools to craft your castle with precision

  • 10 different beach layouts to unlock (lagoon, island, sand barrier, delta...)

  • Colorful and relaxing tropical sceneries

  • Many hidden objects to find and collect

System Requirements

Will my PC run this? →

Minimum

Minimum:
  • Requires a 64-bit processor and operating system
  • OS: Windows 10+ 64-bit
  • Processor: Intel Core i5 / AMD Ryzen
  • Memory: 3 GB RAM
  • Graphics: NVIDIA GeForce GTX 950 / AMD Radeon RX 560
  • DirectX: Version 11
  • Storage: 400 MB available space

Recommended

Recommended:
  • Requires a 64-bit processor and operating system

Supported Languages

English, French, German, Spanish - Spain, Japanese, Portuguese - Brazil, Portuguese - Portugal, Russian, Simplified Chinese, Traditional Chinese, Italian, Spanish - Latin America

Latest news

  • Patch NotesOfficial

    Demo 0.31.0 Patch

    Hi!The first patch for Sandcastle Demo is available! The main improvement is the water simulation: digging holes won't make water appear from nowhere anymore, and in general, the amount of water stays much more stable now!I've also reduced the speed at which the sand collapses by default! The sun intensity and clouds will now also affect how quickly the sand dries.Here is the full list of changes:Improved: Removed cursor toggle hotkey, changed HUD visibility toggle hotkey to F8Fixed: Water simulation reworked to fix infinite spawnFixed: Water doesn't glitch in corners anymoreFixed: No more water spawning when shovelingFixed: Water level stays more stableImproved: Slowed down erosion and evaporation speed by defaultImproved: Demo chip placed on left and hint chip moved in headerAdded: Audio volume slidersImproved: Sun intensity and cloud shadows will impact sand drying speedFixed: Console and controls editor windows height adapts to screenImproved: Time scale resets when leaving the beachAdded: Water viscosity supported, with a slider in the simulation settingsImproved: More color contrast between dry and wet sandImproved: More stable boundary condition (water)Improved: UI footer hides when using a toolImproved: Settings are grouped in categories (general video, audio)Removed: Air & ground swap buffers (Reduces memory footprint and CPU cycles)Improved: Water waves presets (calmer, in general)Fixed: Sliders sliding sound not triggered on initial value setFixed: Small translation errorsFixed: Click on background of water and resolution selection windows close themAdded: Cross version compatibility systemFixed: Play time properly reset on beach changeFixed: Better support for ultrawide screensFixed: Water visibility glitches on steep groundAdded: Support for negative water inflow for future toolsLet me know what you think!
    Read full article on Community Announcements (Bubblebird Studio)
  • AnnouncementsOfficial

    First demo out now!

    Hello beach lovers!I’m so excited to announce that Sandcastle’s first demo is OUT NOW! You can check out our very special demo trailer here:I can’t wait for you all to dive in, but first I’d like to say a huuuuuuggeeeee thank you for 185k wishlists! I’m so amazed that so many of you have found my game!Secondly, a big thank you to the Wholesome team for including Sandcastle in the Wholesome Games Steam Celebration this week! Be sure to go check out all the other lovely titles!Okay now you can go ahead and start building, digging, collecting and most of all having fun!I hope you love the demo ♥️-Bubblebird Studio
    Read full article on Community Announcements (Robyn)
  • AnnouncementsOfficial

    First Sandcastle Demo Launching August 6th!

    Hey everyone! A quick note before we get into it to say, THANK YOU SO MUCH FOR 165K WISHLISTS! We can’t believe how many of you have found our little game ♥️ We also recently reached over 4.5 million views on Instagram, which is just mind blowing! We can’t wait to share more with you.Speaking of more, we’re super happy to announce that Sandcastle’s first ever demo is launching on August 6th! We’re so excited for you all to dive in and to see your sandy creations 🏰Here's what you can look forward to in the demo:🌊 Unique water and sand physics🏖️ 2 different beach layouts to try (Base & Barrier)🪣 A variety of tools to craft your castles with precision🌴 Colorful and relaxing tropical sceneries🐚 Lots of stuff to find and collect ⌛ No time constraints! Just beach. The demo will be a relatively small taste of what’s to come, with the full game bringing heaps of extra tools and unlockables, a much wider range of creative objectives, and lots more! So if you like the beach, building to your heart's content and listening to the gentle lapping of the ocean, then get ready for the demo drop on the 6th of August! Be sure to wishlist Sandcastle and follow us on socials to stay in the loop ☺️ -Bubblebird Studio
    Read full article on Community Announcements (Robyn)
  • AnnouncementsOfficial

    A HUGE thankyou on 100k wishlists, and some more exciting news!

    Hi everyone! It's been a bit of a whirlwind since we announced Sandcastle a few months ago, and there's been some exciting things happening behind the scenes we wanted to share with you all! Firstly, this week we crossed 100,000 wishlists, which is crazy to us! The reception ever since we set the steam page live has been unbelievable, and we can't thank you all enough for your support ♥ Secondly, we're super happy to reveal that we've signed a publishing deal with the team at Future Friends Games, publishers of some of our favourite indie games like SUMMERHOUSE, CloverPit and Islands & Trains! We're super excited to have them on board to help make sure Sandcastle reaches its full potential for launch! We're currently working hard on the demo for the game, and we look forward to sharing news about that with you all very soon. See you on the beach! -Bubblebird Studio
    Read full article on Community Announcements (Dead Meat)
  • Community & EventsOfficial

    A drop in the Ocean Fest

    It's time for Sandcastle's first Steam fest: The Ocean Fest! Let's make some waves!I'm excited to say that I'm still adding plenty of new elements to the game: new tools, new collectables, new features. Join our discord for a deep dive into Sandcastle's dev! I regularly post new and exclusive content!And of course, don't forget to wishlist the game!
    Read full article on Community Announcements (Bubblebird Studio)

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