Those who played and loved any of the Monument Valley games will want to try Maestria. This is another slightly older title, but it's amazingly fun, relaxing, and exciting all at the same time.
It's a 3D puzzle game where players must wander around a floating level and ring bells in the correct order to unlock more, and eventually beat the level. It's simple, yet difficult at times where you must think a little, but loads of fun.
This puzzle game may not have tons of features, but there are over 160 fun and challenging levels, and you have to try the Train world. It feels like a knockoff of Monument Valley in a way, but with its own spin on things, which is refreshing and fun. This is a casual and free game worth trying.