We present an evaluation of CALL-SLT, a web-deployed speech-enabled platform for improving fluency in a limited domain, based on the “translation game” idea of Wang and Seneff. The evaluation used 10 Chinese-speaking students of French, who spent an average of about three hours each practising on a set of five lessons covering elementary and intermediate grammar topics in a restaurant domain. We found significant improvements in student performance, measured both in terms of their ability to be recognised correctly by the application and according to written vocabulary and grammar tests.