I remember playing this game growinhgup  when I was inbetween the age of 5 and 13 I rented this for about a week. I only got to the Pirahnha Plnat boss. I though along with Super Metrioid in was on of the harder Super Nintendo games to master. If you were a novice at mario like I was. Here are  boss statics and startegies froma speed run on you tube recently posted. This was done use tool assitance like slowly the game speed down and like saving possibly more frequentylu than normal. The real game may take you longer or more than about 103 minutes or less to complete excluding the credits. But here are some startegties for most of the boss battles. I may have left out one battle before  baby Boswer when you might have to fight the evil Kopa Magican that kidnapped bady Lugi and  appears in ever boss stage making the enemies bigger most of the time. IF you don't want this assitance than close the website and find out on your own I only have about 9 minutes until my class. Yoshi Island Sattics. first boss enlarge has 1/6  damage resitance against egg shot attaacks.