CoffeeRun - Let everyone enter their order for coffee runs
Twine - Twine is an open-source tool for telling interactive, nonlinear stories.
Lunch Roulette - Collaboration by grouping coworkers randomly for lunch.
RenPy - Ren'Py is a free and cross-platform visual novel engine that helps you use words, pictures, and...
QuizBreaker - A fun online quiz game for teams to get to know each other
Quest - Quest lets you create sophisticated text-based games, without having to program.