# Play

> 3 posts tagged Play on Timo Arnall's site, 2003 to 2010: 3D secret – hidden pictures; Augmented reality experiments; Game design books.

- Page: https://www.elasticspace.com/tag/play/
- Updated: 2026-07-05
- Site map for agents: https://www.elasticspace.com/llms.txt

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- [3D secret – hidden pictures](https://www.elasticspace.com/2010/02/3d-secret-hidden-pictures/) (2010): A Nintendo DSi game using the front-facing camera and face tracking to compute a perspective that renders like a window on a new world. Via BERG.
- [Augmented reality experiments](https://www.elasticspace.com/2006/08/augmented-reality-experiments/) (2006): An afternoon with Even Westvang and ARtoolkit, drafting augmented reality markers by hand and confusing the tracker by drawing them in perspective.
- [Game design books](https://www.elasticspace.com/2003/04/game-design/) (2003): A reading list on game design: Salen & Zimmerman's Rules of Play, Poole's Trigger Happy, Lucien King's Game On and the practical design manuals of 2003.