How many people are playing Summer’s Heartbeat Photobook right now?

Summer’s Heartbeat Photobook is app 4416280 on Steam. Player counts appear once the tracker has sampled it.

When was Summer’s Heartbeat Photobook released on Steam?

Summer’s Heartbeat Photobook was released on Steam on 23 Mar 2026.

Every depot recorded for this app, sized by its current public manifest.

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Depot ID	Name	Platform	Language	Size on disk	Download size	Current manifest	Status
4416280	—	All platforms	—	600 MB