Three years ago, I couldn't develop games anymore because of my health problems. I believed I could make a comeback, but I gave up. This is the result of my lack of ability and qualifications.
Riddles, puzzle ideas, character design, level logic, method, etc... Open all rights to game components. You don't have to contact me to get permission to use it. The original folder of the engine is being shared through Google Drive. I hope it will be helpful for those who study 'room escape game'.
Thankfully, I had a lot of good memories in Steam, such as being awarded green light and receiving positive reviews.
I'm sorry for the bad news.
Thank you to everyone who enjoyed my game.