For my birthday in 1990, I got a Game Boy bundled with Tetris. So there's a TON of warm nostalgic feelings seeing Tetris bundled with the Chromatic. But this is a slight twist on the original, since it adds in both retro and modern mechanics (hard drops, holds, etc). You can play in either mode, and toggle a bunch of options, too.
This is the only launch game I have for the Chromatic, but a handful of others should be here by next week.