Wordmaster is a BCC vocabulary game that I discovered through My English Scrapbook. It is suitable for learners of all levels, as Wordmaster has three levels of difficulty: easy, medium and difficult.
In each game, we are given 10 questions and a time limit of 89 seconds to answer each question. If we are at a loss for an answer, we can resort to the definition as a hint.
To wrap it all, we can listen to the example sentence at the end.