In this video I present my perspective on what I call "playing fair" with the player. Some folks in their beginning game decided to put collision tiles in maze patterns without laying brick over the collision tiles to communicate to the players where the "walls" were.
This can be an interesting thing to do. But, not for a beginning gamer or game designer.
In the video I show an alternative that I think might be a run way to do both -- hide collision tiles AND still play fair.