Nana 2048 description

Swipe (Up, Down, Left, Right) to move all tiles.
After every swipe, a new tile of 2 or 4 will appear in a random empty spot.
When two tile puzzles with a same number touch, they merge into one.
2+2=4, 4+4=8, 8+8=16, 16+16=32, 32+32=64, 64+64=128, ..., 256 .. 512 .. 1024 ...,
When there’s zero available spot and zero adjacent tiles with a same numeral, then game is over.