you have to make klaxes. a klax is a row (horizontal/vertical/diagonal) of at least 3 stones from the same color in a row. in every wave you have to do a job: make klaxes, horizontals, diagonales, points or survive x stones.
if you like tetris, you will like klax and ishizume. ishizume has the same concept like "klax" of atari games.
[ left - right ] - move your
[ up ] - throw a stone back
[ down ] - speed upk
[ + space ] - dump a stone
[ p ] or [ esc ] - pause or exit
tricks important is , that there is a bullet time when you make a klax, use this timeout & construct collapsing structures:
collapsing structures (2 x / 3 x) use collapsing structures and get 2 x the points for a 4 vertical klax
drop the red for 2 x score (and you will get near 60 000 points :-)
bullet time (after a klax time slows down) 1. drop down the red one
2. while timestop - drop the 2 brown bricks on the left and get 4 vertical - counts 2x
use this technic to safe time and get more points
a mode for children