yahoo messenger provides plugins to chat in regional languages like bengali, gujarati, hindi, marathi, tamil, telugu, malayali, kannada. there are 2 different plugins. one is Indichat and the other is chitchat. you can enable or use these plugins by clicking on the "Activities" button on the chat window and choosing the right application. see the above image you can get the idea easily.

you can also play pool, chess and many other games with your oppenants online. the thing required is java. all this game is java supported only.