Are sandbox games your thing?
Cubic Castles is a free world building game and sandbox mmo.

Download one of the top open world building games now!
Begin building and share your creative realms with friends and trade stuff. Dress your block builder and trade items, just like other online sandbox games.

• Fun sandbox mmo: Make any construction you want: open world building, house building, or even mini castle building games and contests!
• Online game: play this free mmo with people all around the world.
• 3D Free Camera: you control the camera!
• Free game: with Cubic Castles, you can play for free.
• Customize your character: Boy, girl, and lots of dressing up!
• Fresh Updates: New updates arrive all the time. From cars to pets!

Incredible castles and realms in 3D
Decorate your character, use block building to make your realm and add furniture. Compete in large events with multiplayer building contests, fashion shows, and dress up games!

Add pets and create new realms for open world building events.
Have your pets follow you around, feed them, or just use them while you're block building your amazing realms!

Social game: make new friends
You start alone in your realm, but you can leave to make new friends, do some exploration, or even help friends with cooperative play! Online building games taken to the next level!

Create worlds and sell stuff
With Cubic Castles, your imagination is the limit! As you gain MMO levels, you can buy and sell blocks, get dress up clothes, or even realms themselves. Open up a shop and sell stuff for profit!

Not in the creative mood?
That's okay because in Cubic Castles, there is more than just world construction: free building contests, craft stuff, or compete in free parkour games online.

As one of the best building games out there, Cubic Castles will amaze you as you embark on your open world mmo adventure! Castle building will never be quite the same!

Cubic Castles is from Cosmic Cow and has been constantly updated for years, with nearly a million downloads! Download today for free and unleash the creative builder inside you!

What’s New

Version 2.0.211

Added fix for broken links in new Fall Pack.

Ratings and Reviews

4.3 out of 5
181 Ratings

181 Ratings

@@@savage ,

Would have been 5 stars..

First I made an account it all went well after a day I tried to log on and then it says “oh you can’t make an account again” but obviously I made an account yesterday then it just removes the account removes the name, password. Also I actually spent 100£ pounds on this game and I literally can’t find a way to fix this.

insectabug ,


I love this game, as well as playing it daily, I try to stay up crazy late at night sorting out my realm or waiting for crops to grow in my farm! Any bad reviews are wrong. The creators of this game are the ones who pick the prices. Their game. Their prices. Yes, they may be a bit overpriced but so what! You can level up and earn things yourself and play with your friends, give them help if they’re new, give permissions to build to other people. Scamming can happen, and that’s a bad but good thing, as it shows that the world isn’t much worse, and the developers do their best to stop it all. The report section works fine. Don’t complain you don’t get any help, as the staff have hundreds of reports a day, and will get to you in time 😊.


Sarah Kirk ,

My thoughts on the game.

Really good game! This is the best game ever. I’ve been focusing on my realm for a bit and been checking out Overworlds. I’ve been getting some Cubits and playing Adventure. I have one idea though for an update: Offline Mode. A mode where you can play the entire game alone. This would fix lag, disconnects, and maybe crashes. It would be good for collecting cubits without people stealing them after you get a massive explosion. There’s just one thing. You can only go to New Eden. (The Hub). You could try to add Dev Overworlds but it would be nice to see. Those are my thoughts and I hope Offline Mode becomes and thing in the future. Please add it Cosmic Cow.

App Privacy

The developer, Cosmic Cow, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Used to Track You

The following data may be used to track you across apps and websites owned by other companies:

  • Purchases
  • Identifiers
  • Usage Data

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Purchases
  • Contact Info
  • User Content
  • Identifiers
  • Usage Data

Privacy practices may vary based on, for example, the features you use or your age. Learn More


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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