Who it suits
Choose this for a long time-travel mystery with branching endings and a phone-based choice system.
Before playing
The opening spends time introducing the lab and its characters before the central thriller develops.
Story and format
Students in Akihabara discover that a modified microwave can send messages into the past. Phone calls and messages lead to different outcomes as their experiments attract dangerous attention.
Who it suits
Choose this for a long time-travel mystery with branching endings and a phone-based choice system.
Before playing
The opening spends time introducing the lab and its characters before the central thriller develops.
Official edition
The linked Steam edition is a paid release. Platform and language information below applies to this edition. Regional pricing and system requirements are available on the official store page.
Where to read it
Platforms, languages, and pricing belong to each specific edition.
Steam edition
Paid · Full / base game
Windows · English, Chinese, Japanese
30 h–50 h · Checked 2026-09-14Sources & verification
store.steampowered.com ↗ — Official developer listing: premise, edition, supported platforms, languages and release date. Genre and mood are editorial classifications.Checked 2026-09-14
Editorial descriptions summarize the reading experience. Availability can change; the official release is the final reference.
