ZMaster has released a Lumines like game for the Dreamcast a bit over two weeks ago. Here are the release notes:

I’ve been working on a Lumines like game for the DC over the past few weeks. The game takes the basic idea from Lumines and is called ‘Block Smash’ but I don’t know in what extent you can call it a clone of Lumines because I never played the original one However, all the artwork and content has been created by myself or under permission of the respective owner and is not stolen from anywhere. The game features 12 Levels/Skins, Sound FX&Music and VMU support (to save your Highscore and current level).

Feel free to send him feedback