Checkpoint 7 (April - December 2013 builds)

This checkpoint was probably a predecessor of Checkpoint 7, but its actual placement is not yet known. It may be scrapped, or just unused. It is also called Old River, as Checkpoint 7's internal name is river.

Other information

 * The original gameplay had a Multiball power-up. In modern versions, it was replaced with a Ball Frenzy power-up as a placeholder.
 * The first and second stage look like a river, which is the reason for Checkpoint 7's internal name, river. The third stage, however, bears a striking resemblance to Checkpoint 7 today. It's possible that when Checkpoint 7 was redesigned for version 0.8.0 as Checkpoint 5, they took the design from stage 3.
 * It's possible that this is the teaser for Checkpoint 7, because the Multiball power-up was found in the original files and the last known version with that power-up was the teaser.
 * There is some dispute on what the music and glass color is, even after the original files were found.