Welcome to Hazzball - a game of concentration and reflexes.
Lead your ball above fields of fire by moving the ground beneath it.
The ball must reach the end of the level before the allowed time exceeds.
Do not let it fall through openings and take care it does not step on each tile more than three times.
If you "step" on the same tile several times, it will collapse, leaving another opening to oblivion. Some tiles are already "damaged", so maybe you can "step" on those only 1-2 times instead of a maximum of 3. Take care!
Good luck!