Martlet's Fun Adventure!

Martlet's Fun Adventure is the simple and fun family-friendly platformer fanhack of Sonic the Hedgehog 1 on the Sega Master System, starring Martlet from Undertale Yellow, where nobody has to die! (Except pretzels. Loooots of tasty pretzels.)

The premise of the game is simple, taking place a few years after Undertale Yellow right before UNDERTALE starts, with Martlet going on a fun little adventure to find Starlo and Ceroba, who are mysteriously not showing up for brunch. On top of that, the Underground has been thrown into a state of civil unrest after an attack on New Home from a group of Vinefroggits, powerful, seemingly brainwashed Froggits with prickly green vines coming out of them and floral patterns, who seem to want nothing more than to terrorize the Underground and cause a civil war, with monsters already fighting among themselves confusedly, accusing each other of controlling the Vinefroggits. And as if that wasn't enough, our precious birb hero keeps losing her diaries, now having lost one for the sixth time this year.

In order to investigate and possibly solve all of these mysteries, Martlet will have to explore many areas of the Underground from both UNDERTALE and Undertale Yellow, braving the freezing cold of Snowdin, the rushing waters of Waterfall, the malfunctioning robots of the Steamworks, face the hot temperature of the Dunes, avoid falling into the CORE and finally, hopefully find the one responsible for all this in the Ruined Garden underneath New Home. She will also have to avoid or kill the various confused monsters, coming from both UNDERTALE and Undertale Yellow, and at the end of each area, face off against one of the deadly Vinefroggits and their magically summoned Petalfly ride, and survive their various attacks.

Will everyone's favorite clumsy bird be able to save the Underground and her friends, or will the Vinefroggits and the mysterious entity controlling them have their way and cause the Kingdom's crumble with terror? There's only one way to find out...And that's to play!