It is more difficult to move against the flow, and very easy to move in its direction. Moving with the flow can make for quicker escapes. The pillars may be used to keep from being swept too far by the stream. The recommended method of attack is to kick bombs toward opponents who are upstream, moving against the flow. This gives the player more control over the placement of his or her character, and also allows the player to quickly escape from the opponent.
When Sudden Death begins, the left and right walls will start to close in on the stage.
- Baku Bomberman Official Guidebook, pg. 104, 110