you're looking for yet another minimalist and strangely addictive puzzle game (because there's such a shortage) you probably want to check out 2048 if you haven't already.
2048 is adapted from 1024 which is inspired by Threes.
The idea behind 2048 is simple enough. You move to matching numbered tiles next to each other and the two tiles are replaced by one that has double the value. Keep going until you get to 2048.
You can thank me for filling up your entire weekend now...
Link: 2048 Doctor Who Edition