The Binary is a web-driven, text-based game in which you're being sent back in time to make sure other people sent back in time don't mess around with things.
Sort of like the recent flick Source Code, only with less Chesty Jake, more Words on a Screen.
It plays out at times like an interactive novel, at others like an adventure game, the whole thing built around a very slick interface that whirs along in your browser, each new "screen" literally opening as simply that. A new web page.
Your mileage will depend on your patience and how well the writing is able to drag you in, but since the entry requirements are so low (it's on a web page and is free), it's at least worth checking out.