JSAB: Expertcore mode

Houston

This level consists of the most common hazards in the game: Round spikes, walls, and black holes. The round spikes and the walls get gradually bigger as the level progresses.

The border walls close in every time the melody plays, starting from the second time and onward, leaving little room for the player to move.

The song itself is notable for repeating the same melody over and over again, for the entire duration of the level.

First Phase

1. Two tiny squares shoot out at once.

2. The walls are larger and have no warnings

3. There are huge spike balls above and below the walls of spike balls

4. 6 rings of bullets appear from the black holes 

5. After the 2nd black hole appears, the 3rd and 4th one appear at the top and bottom.

6. When the tiny squares appear the second time, small black holes appear in random spots

Second Phase

1. There is a horizontal wall of spike balls in the middle

2. The walls are bigger and have no warnings

3. 2 tiny squares are summoned at a time and they come from both sides of the screen

Final Phase

1. There are no warnings for the walls

2. In addition to the huge slow spike balls, pulse bombs appear.

3. The spike balls that take up the whole screen appear come from both sides

4. Lasers randomly start to appear

5. When the walls and spike balls stop appearing for the last time, the borders gain spikes.