Oh, wow, thanks a lot for trying everything so thoroughly! I’m glad that bug I found on the bug tracker is what was happening.
That’s good you don’t notice the bark repeating too much and you can’t tell how the textures blend together. In terms of the bark, I think they might be one of the hardest trees to make, with how distinctive the “eyes” are and how much you would notice if it’s the same texture used over and over again. So that’s good everything I’ve done so far seems to be working. You’re right, it is a Poplar or Populus. I think the common name for one of the variants is also called a Birch tree and another variant is also a Quaking Aspen.
With the music, I agree, that would totally destroy the mood of the game to have Marylin Mansion all of a sudden play :), but yeah, I probably won’t ever have the ability to add your own music into the game. I wouldn’t really know where to start coding something like that anyway. For the note in the game though, it was just about creating a playlist of the songs that are already in the game, like the piano and guitar music. I wasn’t sure how much music might be in the game eventually, and if there is a lot, and people start to have favorite tracks they enjoy listening to, I thought I could add the ability to create their own custom playlist that would just be on their computer. Since I don’t have that functionality created yet though, and I don’t know for sure if it will be needed yet, I thought I could just add the playlist manually in the next build, then it would be there for them, but no one else would have to use it. So hopefully that makes sense, that it’s just a playlist of the music I have recorded. I’ll try to word that differently in the game so it isn’t as confusing. That’s nice to know the music that’s in there fits well with the game.
That’s great the teleporter room is looking nice! Sorry that was a bit difficult to find the Aspen teleporter. My current plan is to try and do something with colored floor tiles, where each teleporter would have a different color of tiles under it, in order to identify each teleporter. Kind of the way that the first Mirror’s Edge game used a lot of color to lead the player. If that’s not enough, I might try to add a title under each painting that describes what that area is about. Since it’s not implemented yet though, I just added “Aspen” under that one teleporter. Maybe for now if I put those words up in the air, people would be able to find it better.
That’s wonderful you didn’t run into any bugs. I thought there could be some if someone played it long enough, but that’s great you didn’t find any. That’s fun that the wind started to feel cold. It took awhile to try and make the seasons feel and sound distinct from each other, so I’m glad to know it worked 
Yes, the materials should be able to adapt to other plants easily. It definitely does make things interesting having to make the whole world able to change seasons :), and yes, I’ll be adding that functionality to everything in the world. For the plants, right now, I just use black and white mask textures to create the seasonal transitions, and I’ll just have to create unique ones for each plant in order to have them transition. What makes them actually change with the season is then just three float values in a parameter collection that can be used with any material. The same goes for the wind, it just uses vertex colors to tell the material where to apply three different effects, one for the leaves, one for the overall tree swaying, and one for the branches going up and down. Using those vertex colors, I can then decide how much of each effect to use on each type of tree and each part of the tree. So they both should be pretty versatile in the end.
That would be awesome to be able to use your material; it would be very useful! Thanks a lot for being willing to do that! It would definitely help save time to not have to start from nothing when I go to do more with the landscape. I’m not sure when I’ll be adding the rain, but it is on my list of things to do. It will probably be sometime after I’ve played around with automatically putting the trees on the landscape.
Thanks again for all of your suggestions; I really appreciate you trying it out so thoroughly! I’ll add those issues you noticed into the next update.