Hallucigenia (ハルキゲニア)

Overview
Hallucigenia is a fangame by Trendy-Sabamiso, it stars two young girls named Aya and Aine. Its current version is 0.008.

Gameplay
You start out playing as Aya in a mostly barren room and access the dream world through a black book on Aya's bed, Aya then takes a different form in the dream world where you can explore. You can unlock Aine later.

Part 2
(Links are from offical website)

Official Website

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