Many years ago, my first game console was a Nintendo DS Lite. And one of the first games I got for it was LEGO Star Wars: The Complete Saga. It still remains one of my favorite games of all time, mostly because of nostalgia to that red and black handheld, but also because the LEGO video games are incredibly fun and engaging (for all ages).
LEGO Harry Potter was originally released in 2010 for Windows, various game consoles, and iOS, followed by a Mac release a year later. Almost six years after it was released on that other mobile platform, Android users can finally enjoy the blocky wizard-themed fun. Both the Years 1-4 and 5-7 titles are available.
The graphics aren't anything to write home about, which is a bit of a shame. Mobile devices are much more powerful than they were six years ago, and this seems like a straight port of the iOS release. Proving that point, the screenshots for the Play Store listing are just iPad screenshots on the Apple App Store listing.
I haven't personally verified how well it runs on my device, but I imagine six years was long enough to iron out any bugs. You can grab both games from the handy dandy widget below.