Source of Game/Photon

[[Game#engine]]

- https://www.photonengine.com/

- Photonとは
--  http://photoncloud.jp/features/ ([https://web.archive.org/web/20151118232251/http://photoncloud.jp:80/features/ web archive])
--  https://www-jp.exitgames.com/ja/Realtime ([https://web.archive.org/web/20150215095954/https://www-jp.exitgames.com/ja/Realtime web archive])