Keydungeon is a dungeon based, key collecting puzzle game where you adventure through 15 unique levels. As you venture through the dungeon, you must collect all the keys in a level to open the door, requiring extreme thinking and logic skills. Along the way you can also place tiles creating the correct path to the exit. Keydungeon may seem simple at first but soon starts to get more difficult as new mechanics are introduced every few levels. This game is great for any puzzle lovers or anyone looking for a puzzle game that progressively gets more difficult. Made in about 3 weeks in the Unity Engine and Aseprite.

http://armorgames.com/play/18905/keydungeon