Vocabulary.com.il is a fun site dedicated to helping you build reading, phonics, or English language skills. They offer Free Online Word Games which are specifically designed to build language skills and motivate people to learn through fun practice in spelling, phonics, and vocabulary.
Following their mission they have built a site full of vocabulary games separated into hundred of categories. “Many people learn English through a blend of methods – by taking English classes, reading books and watching movies in English, and studying English with English language software. Playing word and vocabulary games can be a valuable part of learning English. Not everyone is able to learn English through the immersion method, by moving to an English speaking country and only hearing and speaking English until they are fluent. “
They include a section for teachers where they explain some creative ways to use this web in class.
Computer Assisted Language Learning: Theoretical backup and practical issues