Star Shuriken Mario 4 / スター手裏剣マリオ４

Description

Updated on November 2015 (Ver. 1.2). Author's notes:

"This work is a series aiming at the exhilarating feeling of gorging forward with power-ups such as items and coins.
The hack consists of 4 worlds and 19 stages in total. There is no hidden world this time compared to previous entries.

The Star Shuriken is the weapon that Yoshi throws in the climax of “Yoshi's Eggs,” a manga by Kazushiro Motoyama. At the time, I was thinking of creating a hack using a new flying weapon, but 
I was just thinking about it and ended up borrowing the Star Shuriken from the manga because I couldn't come up with any ideas.

About the scoring system 
When you defeat enemies with star shuriken in succession, the score you get will be increased. After a certain period of time, the score will be restored. The time limit for score increase is until the time when the score disappears.
In this hack, your life is increased by 1 per 100,000 points, so it is easy to increase 
the number of remaining lives by scoring points while in Fire Mario form."

Basically, the "fireballs" you shoot not only can be used to kill enemies regularly (with a larger hitbox this time) but also can be used to collect coins as well! Some other minor ASM changes can be seen, from converting time to score at the end of castle levels and Koopas being defeated upon doing the infinite 1UP trick (you only get 1 extra life).