D'LIRIUM is an experimental shooter with horror elements. The action takes place in a fictional world inhabited by different types of ponies. The user and his friends were invited to a mysterious mansion to celebrate the New Year. The curator also gives them a mysterious gift, which is strictly forbidden to open until a certain time. However, keeping it closed is not so easy. Only a powerful magician can cope with this task. Fortunately, the heroine has enough strength to complete the task. The contents of the gift will constantly break free; it will be a worthy opponent for a friendly company. The Curator will lead what is happening. It was he who arranged this test for the characters, thinking through every detail in advance. But even he failed to keep everything under control. Things don't go according to plan and strange things start happening.

Delirium contains some mechanics from the 90s. At the levels there will be such classic missions as searching for keys. The stages will not be linear, but will open sequentially, without the player having the right to choose. In addition to already established techniques, the developers are using new experimental tricks. The controls are not traditional for this type of game. Some unexpected turns of events also attract attention.