A free app for Windows, by The Haunted PS1.

Madvent Calendar 3: Necrosis is an action horror survival game for Android devices. In this action-packed horror game, you must explore a large and crowded city in order to find your way out of this dark and creepy place. You will have to fight against a large number of enemies, some of them will be friendly and some of them will be hostile. Your goal is to find your way out of this place, and in order to achieve that, you will have to use the power of your mind.

In this game, you will be faced with various tasks. Some of them will require you to perform certain actions, and some of them will require you to find certain items or elements. If you perform the tasks correctly, you will be able to find the way out of this place.