Viewfinder is the perfect example of having a coll mechanic idea and turning it into a game, exploring it's full potential without overstaying it's welcome and building interesting elements around it.

You'll explore it's world trough this mechanic, taking pictures to get to the final of the level, simple enough right? and it is, viewfinder always introduces ALL of it's mechanics to the players, allowing them to first learn and them use that knowledge to both solve puzzles the intended way but also their own way and never trying to get the better of the player at any point.
With that solid base the game iterate upon it throughout it's five worlds, each reflecting a different style, mechanic and the person who made it. Then add layers of a captivating narrative, some mind bending puzzle solves, gorgeous looking environments and spray some amazing Easter eggs and especial styles and pictures over it and you'll have your game.

In the end viewfinder gives the players all the tools needed to have the best of times with it, culminating everything you'll learn into a great ending level and a bittersweet but hopeful ending, and don't forget about the best companion, your feline friend Cait!