In the famous sandbox game Minecraft Classic, which you can play online, you can build anything you want.
Ways to Have Fun
In the artistic mode of the game, you can build things out of 32 blocks. You can play the game with up to eight other people at the same time.
Use WASD to move.
With a left click, you can move or remove blocks.
Right-click to change the build mode.
Block a choice by using the number keys.
Enter to save the location, R to load the location, and B to show the choices for blocks.
T to talk; F to clear the fog.
Have fun and good luck!