I have often introduced games in this space before. But recently I found a site that has two types of educational games. One type is single-player games, the sort of Flash or Shockwave games that are very common on the web. The other type is multi-player games that any learner visiting the site can access. With these games, learners can play competitively with 2 or 3 other players. The games that would be of interest to language learners are mostly spelling and easy grammar games found on the Language Arts page. There are also games for other subjects.