PROF. YO's YO VOCAB BASIC (U.S. Edition) Cost: $9 Get the full version     Trial version     Developer's Website Contacting third-party download site please wait. If your download does not start, click here, or get the full version Descriptions PROF. YO's YO VOCAB BASIC (U.S. Edition): YO VOCAB BASIC lets you test your vocabulary in the Multiple Choice game format. You can play Word Games with 1000 fascinating English words, all classified by Age Groups, Subjects, and Difficulty Levels. A powerful search utility lets you use a combination of various classifications, as well as an Advanced Search utility, to play your Word Games.