This app was mentioned in 8 comments, with an average of 1.25 upvotes
There's a really old, extremely awesome, simple-to-play, impossible to master, game called "Trap!" by a dev named Matt Wachowski. It's totally free, with no ads, and only takes up a few megs of space.
It's been on the Play Store since that was still called "The Market", and it's still the first game I install on every one of my devices.
(If you're into classic gaming, it's very similar to Qix, except that you can use your own music while playing it, and the combos you can set up after learning the ins and outs set up some HUGE scores)
I've kept my eye on this game for years, and it's finally gotten the million+ downloads it deserves.
Trust me, it's absolutely worth downloading.
(Please, also, give me your own opinions on your favorite game to play, ever, if you have the time.)
Even a better game on a 7" tablet, btw.
Play Store link: https://play.google.com/store/apps/details?id=com.mattwach.trap2
The game Trap! back so many memories. I played it back in the day when Gingerbread was the shit. It was one of the few games that ran perfectly on my old phone because it is such a small app and it doesn't use many resources. Also, it can vet quite addictive.
My favorite games that are not clash of clans are:
still rocking me some jeezball clone..
https://play.google.com/store/apps/details?id=com.mattwach.trap2&hl=en
I'm not sure if this Qix thing is correct, but I played a version called Trap or Trapped I think.
Edit: See here.
Trap!, a jezzball-like game. Last update April 4th, 2011 haha