Shipwreck 

Shipwreck is a single-player tabletop roleplaying game about being lost at sea, but also about how we interact with those we may lose and those we've lost. All you need is two d6 dice and pen and paper. 

(Spoiler: It's pretty bleak.)

The game is presented as instructions and narrative text, all in a one-page downloadable PDF. You can also read it online here.