Architecture meets Tetris. This game has simple rules and it does look simple at first, but it can get quite complex. I'd still classify it as a casual game, as you can stop playing whenever or start a new game whenever. This is not really a simulation game, you don't build to have fun at building if that makes sense. The strategic placement of buildings is the most important aspect you'd have while playing.

Architecture meets Tetris. This game has simple rules and it does look simple at first, but it can get quite complex. I'd still classify it as a casual game, as you can stop playing whenever or start a new game whenever. This is not really a simulation game, you don't build to have fun at building if that makes sense. The strategic placement of buildings is the most important aspect you'd have while playing.