We recently discovered a useful website that features more than 272 educational games that are available online called Spree Games.
The games we tested out were all free to play online, and can be browsed by subject covering everything from Foreign Language (although nothing for learning Chinese as far as we can tell) to English, Science, Math, and much more.
The site is geared towards K-12 students, and also allows you to view games by age level and create lists of games by logging in and saving customized preferences.
We first noticed this site via way of a blog post on Free Technology for Teachers, which is another great site for finding free tech resources for teaching professionals.
Educational game repositories can be a big help to teachers and parents, and we hope our Chinese game app will find its way into sites like these soon to help serve this subject matter in need of more learning materials.