Musou Yuugi (夢想遊戯)

Overview
Musou Yuugi (lit. "Dream Play") (夢想遊戯)is a Yume Nikki fangame made by  あたみ (Atami) (Pixiv )  who is also the producer of Lost † Game. It stars Shira Yuki (白雪), a girl who refuses to leave her room. The game seems to have a theme of Japanese folklore/theatre.

Gameplay
Musou Yuugi is like most Yume Nikki Fangames, Shira Yuki enters the bed to sleep, and can then enter the nexus. After you collect an effect, it later appears in the nexus.

Plot
It is possible Shira Yuki was involved in preforming arts before becoming a shut in.

Musou Yuugi/Dream Play
Pixiv Release Post