Unblock lights comes from Evgenii Polomarchuk. The object is to slide the red tiles right/left and the blue tiles up/down in order to clear a path for the lights.
This is a very solid game. The solutions are not obvious. Trying to collect stars by minimizing the moves requires me to do them twice. First to get the solution path of the lights. Second to then minimize the block moves.
There are 900 levels, which is far too many. But I definitely like this game. Good job Evgenii!