Yeah, what is PictoBits? Is it any good?
It's an interesting puzzle game with different levels based on retro games and some excellent chip tunes based on the music from the original games (Mario, Excitebike, Wrecking Crew, Ice Climber, etc).
For gameplay, there are oddly-shaped sets of colored tiles that drop from the top of the screen. You use the stylus to pick up colored blocks and place them on the screen in locations where they will form either lines of 4+ tiles or square shapes with the dropping blocks to make them disappear. There are neat combo systems and ways you can earn coins to unlock additional content - including more challenging levels and a jukebox feature. Your quickest time and highest score for each level is also tracked so that you can go back and try to improve your performance.
While the basic gameplay is enjoyable (not a surprise for the ArtStyle series) it's the music that really made me enjoy the game. This is one of the rare games where I've ever opened it the soundtest/jukebox and just enjoyed listening to the music. It really is that good if you think that remixed versions of classic 8-bit themes sound appealing.
Personally, I would recommend PictoBits for any retro and/or puzzle fan. (I would've recommended buying at full price. Getting it for "free" makes this a no-brainer.)