Sincerely, Stampy
Abducted... by aliens? No! By Astral Entities!! Welcome to the Astral Plane. You and four other Humans have been selected. In the next two weeks, please explore the facility, collect stamps, make friends, and uncover multiple endings. We'll be watching your progress. Best of luck, Human.
Last Updated: 9/11/2025
| Developer | 3 Halves Games |
| Publisher | 3 Halves Games |
| Steam App Id | 1994910 |
Sincerely, Stampy
Abducted... by aliens? No! By Astral Entities!! Welcome to the Astral Plane. You and four other Humans have been selected. In the next two weeks, please explore the facility, collect stamps, make friends, and uncover multiple endings. We'll be watching your progress. Best of luck, Human.
Last Updated: 9/11/2025
- Windows
- Mac
- Linux
About Sincerely, Stampy
Sincerely, Stampy is an Indie, RPG, and Adventure game developed by 3 Halves Games. It was released on the Steam Store by 3 Halves Games.
It can be played and ran on Windows systems. At the moment, there is no confirmed information regarding Steam Deck support for this game.
According to Steam’s category system, Sincerely, Stampy supports the following features:
- Steam Cloud
- Full controller support
- Steam Achievements
- Single-player
- Family Sharing
Media & Sceenshots
Watch the featured video for Sincerely, Stampy and see the latest screenshots from the Steam Store.
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Frequently Asked Questions
Soures & References
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Sincerely, Stampy data has been sourced from:
- Valve Corporation. (2025, September 11). Sincerely, Stampy on Steam. Steam Store.
- Valve Corporation. (2025, September 11). Sincerely, Stampy. Steam Community Hub.
- 3 Halves Games. (2025, May 2). Sincerely, Stampy. Sincerely, Stampy.