Bent Sinister Games is running a Kickstarter campaign for Children of Bal-Ghul, their 1 vs 1 RPG game book.
From the campaign:
Just a player and DM? No problem, welcome to the 1v1 format. We provide everything for a night of table-top role-playing/gaming.
We are building a series of One vs.One Adventure Modules that give a pair of gamers everything they need to enjoy a night of roleplaying fun. This includes a great story, an optimized character to participate in that story, and all the maps and tools you need to make that story come alive.