Chris O'Connell has announced that Sachi's Quest has been released.

"SACHI'S QUEST is a first-person adventure that allows a player to take on the roll of "Sachi", a female agent who fights oppressive aliens in a very dark future.  Players will experience several interactive chapters, each taking place on different worlds, leading to a final battle on an alien-conquered Earth.  Along the way, the player discovers and uses various weapons and equipment to help aid in surviving the adventures on each world.

SACHI'S QUEST also includes a mission editor for creating custom content.  "Imaginative players are highly encouraged to use the mission editor to create and share their own adventures for Sachi to survive." says Chris O'Connell, the creator of the game. "Several game companies don't allow this sort of thing with their products.  I hope that, people will like Sachi and her adventures so much; they'll take pleasure and put her through whatever kinds of adventures they want to create."  The mission editor includes several options that allow users to invent and change whole environments to play in, including mountains, fields, lakes, hills, plant life, buildings and various items, as well as weather effects such as rain, snow, lightning, and sunshine.  The mission editor can even be used to affect the behavior, or artificial intelligence, of certain characters in the game."

You can order the game and download a demo from the official site.