If you like playing puzzle games on your Java mobile phone such as Nokia, Sony Ericsson, Motorola, Palm or Blackberry, Tetris Mobile might be something that can keep you busy. Tetris is a very popular falling-blocks puzzle game available on quite a number of platforms. The game contains shapes composed of four square blocks each - fall down the playing field. The object of the game is to manipulate these blocks, by moving each one sideways and rotating it by 90 degree units, with the aim of creating a horizontal line of blocks without gaps. When such a line is created, it disappears, and the blocks above (if any) fall.

Here are links to a few Mobile Tetris games for Java J2ME based MIDP 1.0 and 2.0 capable mobile devices:

Tobi-Tris: MIDP 1.0 | MIDP 2.0

Fremtris: Download

J2ME Tetris Midlet: Supports features like multiple levels (0 to 9), Game Boy-like scoring, fast gameplay, pause and resume game during call, etc. Download link.

Mobile Mir: They’ve got a bunch of Mobile Tetris Java midlets on their webpage, one of them being Mobile Tetris.