This is a derivative work of the 1990s anime game [Serial Experiments Lain]. It was created using RPG Maker MZ and based on the official guidelines "Lain Time to Live". The game is about exploring dungeons and reading the scenario. I think you can play through the entire content in about 2-3 hours.

Patch announcements
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From the game’s Steam news feed. An announcement is not a build: games can update without posting. Every public build we saw is on the Builds tab.