Time for me to publish some of the stuff I am working on, besides LWJGL.
I work for a company called Certus (subsidiary of betware.com). We develop amongst other things Multiplayer Casual Games.
We just published one of our latest games: Blockwar. The games is basically a multiplayer (2-5) tetris variant. Apart from placing pieces (and staying alive because of misplaced pieces!) players gain specials from removing multiple lines. These specials can be thrown on your self or others. The game is available in both english and german.
You will need to create a free account to play the game: http://certusgames.com
Blockwar is only one of many games that are available on http://certusgames.com