UserGuiding - User onboarding made easy, for less. Create product walkthroughs in a couple of clicks, without breaking the bank.
TripleA - TripleA is a free (under GPL) turn based strategy game based on Axis & Allies board game.
Usetiful - Fight user churn with great user onboarding. Interactive product tours and smart tips significantly improve your user retention.
ThumbZilla - Awesome thumb stomping and kicking action game.
Userlane - Digital adoption platform with interactive guidance for software applications allowing anyone to understand and master any software from the get-go.
Warlight - Warzone is a customizable Risk-like strategy game where you compete with your friends to conquer the world.