Super Mario Star Scramble 3 is a Flash platforming Mario fan game and the sequel to Super Mario Bros. Star Scramble 2. The game has new visuals and mechanics, bringing new glitches with them. Gameplay requires Mario to collect a number of Stars in order to unlock a door to the next level. These levels then culminate in a boss battle, this time against Bowser Jr.
This TAS by Mikewillplays beats the fourth (it's confusing) entry in the series as fast as possible.