Selador is a browser-based fantasy game. The game was commercial at first, but has since been released as open source by its developers. The game focuses on teamplay and communication between players. Although it is played in real-time, strategy and planning are paramount. It comes with a nice set of graphics and a pre-populated database. It can be installed on any *AMP stack.
British bingo runs in your browser and uses 3 by 9 boards. The game simulates the other players. Players make mistakes and chat. Players leave, join, and re-join between and during games. You can have over 10,000 players. You can hear the players and the caller talk. You can change the sizes to fit a small screen