Private Moon Studios has released demo versions of the three first parts of their serialized adventure game, Agon, which they proclaim to be "the world's first adventure game series". The adventure game will eventually grow to consist of fourteen chapters, however only the three first are currently available, with the fourth part to be released soon.

You can download the demo versions over at Agon's website, where you can also buy the game in the online shop.

In Agon, players take on the role of Sam Hunt, a professor at the British Museum in 1903. One night you receive an anonymous letter and a page torn from a book that references an ancient board game lost to the ages. Intrigued, you begin to hunt down clues that will, by the end of the story, lead you to twelve far-flung locations across the globe and to the existence of the ultimate game - AGON.