A truly fantastic idea! Of course, it’s not fully developed yet, but the potential is enormous. For example, I could imagine a completely overgrown bookshelf in the present blocking a passage. In the past, where it isn’t overgrown yet, you could move it to clear the passage in the future. Puzzles like this could make the gameplay really exciting and varied.
Here are a few additional ideas:
To make the transition between the past and present more noticeable, you could apply a filter to the background music, making it sound like it’s coming from an old radio. Alternatively, you could use a sepia post-process filter. These additions could enhance the vibe even further.
I felt like I was controlling both characters simultaneously. If that’s intentional, that’s fine, but I believe it would be more interesting and make more sense if one character remained in the past while the other stayed in the present. I went through the first door in the past and switched to the present. Afterward, I ended up in an empty room in the present with no door. I understand it’s just a concept, but you should consider making it so that the character in the present stays exactly where they are when switching between timelines.
Implementing the intro as a comic would be an excellent fit and add extra charm to the story. The basic idea of the intro is good, but I think refining the texts with ChatGPT could help the story shine even more and make it more emotionally engaging.
I’m excited to see how the project evolves—keep it up!