Zaz is a puzzle game, a 'clonespiration' of Zuma, one of PopCap's notorious proprietary (casual) games. You are confronted with a stream of differently colored balls and have to put three of the same type next to each other to destroy them. There are power-ups, you're under time pressure, you have to aim, that's fun actually.
The game has nice music and good sounds, though I couldn't find author information on any of the game data. EDIT: Ha, I looked in the source directory, but not on the menu screen! So gfx & sound is by Remigiusz Dybka (who also programmed the game) and I guess it's GPL3-ed. The music tracks are (remixed?) CC-BY-NC-SA Nine Inch Nails music.
What I'm *very* much impressed with is that the game has a in-game menu to create a recording of a game you played! It even captures audio! Usually I use glc for recording video/audio in OpenGL games.
When you record a game using Zaz' internal recorder, it creates a Vorbis/Theora .ogv file. Only problem is that you can't do anything while the recording process (you have to watch the replay, while it records and can't even switch to another window) See an example video that I recorded below.
PS: Since I'm a big wuss when it comes to playing puzzle games in which you have to aim games, I have a wish for Zaz (besides nice background images :) ) and that is to have an indicator, what ball will be affected by me pressing or releasing the mouse button. I don't like aligning the Grappling hook with the balls. :|