BBC
Bbc: Skillswise: Words to Watch Out For
A factsheet, a worksheet, a game, and a quiz are provided for teachers and students at this BBC spelling skills tutorial that shows you how to avoid confusing words.
Arcademics
Arcademics: Furious Frogs, Antonyms, Synonyms, Homonyms
Pick the game to play: antonyms, synonyms, homonyms and then quickly click the correct word that is the same or opposite.