You are saying what is Terrain ?
Terrain is Chilling game (again it is not Vibing Game) , you can chill with 2 Other friend or Alone.
Link on Game:
https://www.roblox.com/games/4910174507/Terrain
If you want to have better Enjoyment of the Game make sure to turn Graphics on max If you can , again this Game was create by only me. I was using again Roblox Developer Forum for some Scripts and Helps.
So , make sure to Play this Game if you want , It will help me alot.