If you've ever thought to yourself that casual games have something for everyone, you may now officially add Architects and AutoCad users to your definition of "everyone". Open Doors is a clever puzzle-game by Ozzie Mercado (SoapAintNice), played over a gridded blue-print of a building complete with doors and swinging circles meant to identify hinges. As you move past these contraptions, they slam shut behind you! It's like a house-of-mirrors boiled down to sheer design, and a fun one.
Controls are simple, just use the [arrow] keys to move in the cardinal directions. You're the square, you want to get to the X. Walls and doors cannot be passed through, unless you're pushing on a door in a direction that its hinges don't oppose. Note the circumference of the circles connected to doors, not only do they signify how a door moves when you push it, and what directions they can't be pushed from, but the little white lines determine where the doors will close behind you. Later in the game, you get double and triple jointed doors that fall into Jacob's Ladder like patters, filling out every possible position or coiling against the wall. The results are tricky and briskly rewarding.
Analysis: This is unusual for me, but I have little analysis to offer. It's a simple concept, simply executed and simply presented; as simple as chalk-white lines drawn flawlessly to grid. It's refreshing to see someone take such a short-form position on a single mechanic, and do it right.
To paraphrase Morpheus: I can only Open Doors, you're the one who has to walk through them.