Shift is a bit hard to take in hands on the first go, but once you pick it up you just can’t stop playing…
The rules are really basic : click on the left, right, upper, or lower part of the screen to have all the blocks who can move in that direction… If you form groups of 3 or more blocks, they’ll disappear, etc…
To get huge scores, trying doing combos, not leaving a single round before exploding another group, etc… Easier said than done!