4-level grayscale only uses 2 buffers, not 3.

Yes it would but then he can remove the pause.
chattahippie, epic title screen is epic!

Pause == delay
He has a delay with a value of 10 in the loop.

no its just a number.
In 6mHz mode, there go about 1700 pause loops in a second.

Oh, that seems more complicated than just waiting a certain amount of time.

EDIT: So chattahippie does that delay to slow down player movement?

Yes, it slows down the entire game a little bit, but is unnoticeable due to the pause being so small

No, just the main front and back buffers (L6 and L3)

Hm, are you just Pt-Changing the character then?

Yes, and it makes the game much faster, and also allowed me to make the trail

It only draws the tilemap when switching levels

How does it use pxl-test if the killing blocks are light gray?

Axe uses only two buffers, the main and the back buffer
When the main buffer is on, the pixel appears dark grey
When the back buffer is on, the pixel appears light grey
When they are both on, the pixel is black

But since there are only two buffers total, I check collision against the main buffer for actual collision
and I use the back buffer for death collisions

To get around black blocks killing the character (they also use the back buffer), I test outside the character sprite for main collision,
and inside the sprite for death collision (the player sprite resides only on the front buffer)

Hope that made sense