A wide variety of vocabulary games for all levels. Here is a small selection.
Spelling City - type in the words you want to practice and play games to learn how to spell!
British Council All Levels. A wide selection of grammar, vocabulary and other skills practice.
A4esl.org A wide selection of games and quizzes for all English skills.
The Spelling Match Game Choose your level. Lower Levels - match sounds of words to pictures. Higher Levels - match the two halves of the word.
Spelling Bee Competition Listen to the word and spell it! Win points.
ESL Tower A wide selection of vocabulary games and quizzes for all levels.
ClicknLearn Based on the Spanish Secondary Education System. The levels correspond with Spanish school years.