Optimized for Android and human brains.
Slide Your finger over the numbers to make se7en or multiples of se7en. You must to combine the numbers so that their sum be seven or multiples of seven.
Best game for killing time.
Good to play when you wait the bus, the train or the plane. Perfect at the office, where helps you to have a busy face in front of your boss.
Xse7en' Lite is the demo version for Xse7en's!

Weigh your brain

Zero is a mathematical puzzle game. In which you need to convert given number into zero by applying provided mathematical operator like plus(+) , minus(-) , multiply(*) , divide(/), power(pow) and square-root(sqrt) .

Get rid of these zombies cows

Zoo Escape! - The Puzzle Animal Match Game. Catch the Escaped Animals to Earn Cash.

Zz is the last game on every list, ho ho :-)

It is a variation of the cell clicking game ClickoMania

• Retro clicker (3 to 6 colors)
• Bombs, rocks, magnets or even halelujah bombs
• Dual color blocks, magnets, flips and other surprises
• Dozens of levels, starting from easy to insane difficulty

And it is ABSOLUTELY free.

Logical game Spider. Collect all flowers and do not meet in a spider web!