An extra stage can be earned for meeting specific criteria on the final stage.
Europa-2 was a similarly designed rocket with an extra stage added in.
The extra stages featured in the Dreamcast version 5.45 were included.
In order to reach the extra stage, one must beat the game on normal difficulty or higher without the use of a continue.
In terms of difficulty, the extra stage is around the normal or above difficulty levels.
This is similar to what happens with a capsule, but with an extra stage.
These are their final hosts, but since they do not live in water, the nematomorph life cycle has an extra stage.
In addition, extra stages can now be played on any difficulty level.
If 1st rank is achieved, the player is given an extra stage to play.
Could you then have got out of the black hole with the remaining extra stage?