Perf & Postmark - learn philately by playing
An open-source game by peterdsouza247 · used under the MIT License · free, runs in your browser
A stamp-collecting game for a school philately club, and for anyone who has ever picked up an old envelope and wondered what country HELVETIA is.
How to play Perf & Postmark - learn philately by playing
- Choose a level: Novice, Collector or Philatelist.
- Read each stamp's inscriptions, measure the perforations and judge the condition to identify it, then file it in your album.
- Every stamp is drawn in code rather than scanned, so the perforation gauge really can be measured.
Where this came from. Perf & Postmark - learn philately by playing was published as open source by peterdsouza247 at github.com/peterdsouza247/postmark under the MIT License, which permits redistribution. We host a copy so it stays playable. EveryGameMade is not affiliated with peterdsouza247, and the author did not submit this game to us.
Copyright © 2026 peterdsouza247. Full licence text: LICENSE.txt. The game file is served exactly as published. Progress is not saved between visits, because the sandbox that keeps this code away from your data also denies it storage.