Laser is one of the best power-ups but its at the end. The best way to get it sooner is to occupy Safe and Wide. By doing this you only need three power-up advances to get Laser.
Laser and Bomb
Laser and bomb cannot destroy everything, such as the clear black blocks.
Level 24
It is best to use Multi to get the two blocks hidden behind the unbreakable ones.
Multi power-up
Never use the Multi-power-up when you have a Safe. It will be difficult to keep the three balls under control and the barrier will eventually be destroyed, sooner than if you were only controlling one.
Recommended power-ups
The recommended power-ups for Tokoton mode standard play are Slow, Mirror, Multi, Safe, Wide, and Laser.
Zone 8
Defeat the Zone 7 Boss to see the normal ending and save the game. You will also get the final orb. Load your cleard saved game file and complete all seven training rooms to unlock Zone 8 on the world map.