First, this video highlights the main elements of the game, including the minigames and the 3D Otherworldly Playground:
Now you can watch how to solve the first level of Spooky Dwellers 3:
And this video shows how to remove the spider webs using fire in Level 9 (the spider webs are blocking the light). The idea is to form matches next to the bonfire to ignite some cells. Then, you’ll form matches next to those burning cells to keep propagating the fire until it reaches the tiles with the spider webs.
Finally, the 3D Otherworldly Playground has several missions to complete. Most of these missions involve placing specific objects on the terrain and performing actions, such as changing the view of the terrain. This video shows how to complete all the missions.