In his latest @Play post on GameSetWatch, John Harris discusses an exploration game which he's been working on. Mayflight follows a fairy named Aurora, whose lifespan is a mere 10 seconds.

Fortunately, there are sparks placed around the randomly-generated areas of the world that will increase her time by a couple of seconds. Your task is to see as much of the world as possible before she hits the bucket. The catch is that the world is infinite and goes forever, but as you travel further from the starting point, there are fewer sparks to collect. Eventually your curiosity will get the better of you in the form of death.

There's plenty more to it than that, with Roguelike elements, nasty baddies and dozens of different area themes to find. Your best bet is to read John's post about the game - it's genuinely interesting stuff - then give the latest version a download.