Game-based learning uses branching story scenarios to develop communication skills for adult learners. The eTrees project aims to create an online application using branching stories and games to improve workplace communication. The consortium includes experts in serious games development, adult education providers, and organizations focused on learning methodologies. Games appeal to adults and are effective because they replicate real-life problems, allow experimentation and replay, and promote active, experiential and self-directed learning through goals, feedback, challenge and storytelling. The eTrees tool will be tested in 2014 and launched to allow trainers and businesses to create customized branching scenarios.