Thanks for your kind words. I'm working on a sequel for FoE but it's not nearly finished. I encourage you to start working on a similar game, it's fun to play with those mechanics and there is so much to explore. Here is another game you may like to try: https://geckoo1337.itch.io/project-a also there is Antichamber and soon (I hope) Magnifold Garden.
I already started trying to code something similar, and I think I know how to make the teleportation thing but I have absolutely no idea of how you did the many reflections thing that you can see in "The Tower". That really blew my mind. I mean, when you look at a door, you see what's in front of the other door. I mean, again, in the tower, instead of seeing a wall, you see what's in front of the exit door in the next floor. You'r game did that in a great way, so much that it feels real.
Gosh I have so many ideas!
And thank you for those recomendations! I really love these kinds of visual games, where you need to see the world in a different way in order for you to finnish them. I also recomend you the https://xra.itch.io/memory-of-a-broken-dimension game, which is really interesting and has a very cool dark ambience. And also try https://ianmaclarty.itch.io/forests-are-for-trees . All of his games are really strange optical illusion things.
You got me curious so I looked at asset from Unity Store and there is quite some:
There is free ones like https://assetstore.unity.com/packages/tools/particles-effects/gater-portals-system-59185
This one seems really great (but not free) and can play on scale (spoiler for FoE episode 2 ...), and there is a demo only
Even if you don't use Unity, it can be great for learning. I saw video of Memory of a Broken Dimension but did not know it was out, I need to try it!
I don't use Unity but yeah, it's always good to learn new things.
At the beginning I thought of making the teleportation stuff myself, but maybe I can use some assets too. Gosh I now want to make a game using these kinds of things so much I may start today (only maybe cause I'm sutdying right now. School is not easy and who knows if I got enough free time).
And Memory of a Broken Dimension is still just a demo and only has like 30-60 minutes of (awesome) gameplay. "This version is pretty old (2012) and not very representative of where the project is currently. " says the author, so apparently when it gets released it'llbe even better.