A professional looking building, with quite a lot of real estate. The typical mini puzzles for awaiting players. BER does well with promoting its branding; from the posters of the rooms, to clothing, and marketable items.
The owner of a mystical bookshop is up to something sinister. He has captured a mystical creature and plans to use it to take revenge against the Arcane Library. You must sneak into his shop, find the creature, and rescue it before his plan can be carried out.
Grim Stacks delivers on the basic principles of what an escape room requires: an intriguing story that invests the player along with fun challenges that drive the excitement. However, I wouldn't go so far as to say there's any amazingly innovative escape room tools that they've implemented. It's important to highlight the focus that BER places on their immersion of concept - Grim Stacks shines with a mystical glimmer.