At the time of battle with Bowser you need to take him from back and when you are close to his tail you must press down button. Then you must press repadley right and left buttons. When you are ready to throw him on mine press space.
Bowser appears three times in game and one time in game you find Bowser duplicate. When you touch Bowser you will take damage.
Here are some bowser appearences:
- Bowser's first trap
- Bowser's seccond trap
- Bowser's Final Castle
And duplicate of bowser you can meet at the middle of Bowser's final Castle.