It's not Lain related but I think you'll like it anyways. Unfinished mini "music-game" about Lily's adventures in the Ether.
If you encounter any kind of problems/bugs please contact me.There's really not much of gameplay, that's why I call it scenario and not a game, I hope you'll enjoy yourself anyways.
I'm releasing this mini scenario thingy made in Unity. This is my contribution or response to the 15th anniversary of SEL.