I like it! I was looking forward to someone making an Arkanoid clone for the playdate! It was the first thing I thought of when I got my hands on the device. I hope you'll continue working on it, and add sound!
Oh and if you are planning to continue making these clone arcade games for Playdate, maybe take a crack at Puzzle Bobble/Bust-a-Move next?! It was the second thing I thought of after getting my hands on the crank. Just look at Bub cranking away down there, aiming his bubble machine!
Sound is planned. As well as Puzzle Bobble, because Taito screwed up the Egret 2 mini by not letting us control it with the spinner
I just have to figure out the math involved, since I'm used to working with squares and grids.