Fort building is a great start package for building style games. it is still in development but you can get the updates when the come out for free.
In this demo you can :
-build a stair, a floor and a wall
-set the keys you want to use for building and mouse sensitivity
-Run, jump Version: 1.3
With our collection game assets 3D models, you can download
Unity Templates Fort Building v1.3 Unity or Unreal Engine-ready resources to enhance your game design process. We understand the importance of having right tools at your disposal, which is why we've curated a diverse selection of assets to cater to every genre and style
