From bandcamp:

Fantasy Battles is a Final Fantasy themed release featuring a 6-song medley. While each of these tracks can be listened to in their own right separately, we encourage you to listen to them in order for maximum listening experience, as it was intended.

Ryan Iyengar - Lead Keytar
Ryan Bradley - Lead Guitar
Nico Saavedra - Drums

Produced, Arranged, and Mixed by Nico Saavedra
Mastered by Grant Henry
Artwork by Ben Hosac

Rhythm guitars and bass guitars by Nico Saavedra
Game soundtrack transcriptions by Ryan Iyengar
Lead guitars on Maggie’s Quest by Ryan Bradley and Josh Seguin
Additional keyboards, and vocals on True Survivor, by Lacey Johnson
All instruments played and performed

Band pictures by Nicholas Mauer. Drum shot by Neil Schuh
Logo, design, album layout and website By Sara Saavedra

Final Fantasy music composed by Nobuo Uematsu
True Survivor written by Jörgen Elofsson & Mitch Murder
Maggie’s Quest written by Adrian Shegstad

Special Thanks: Steven Torres, Vince “Super Roadie” Fenno, Nate Horsfall, Max Gomez, Jesse Nason

Super MadNES is a live act and a tribute to retro video games and traditional heavy metal music
www.supermadnes.com

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Kung Fury is a 2015 movie set in the retro style of the 1980s.
Track 8. Maggie's Quest by Zantilla is apparently an original work originally featured in the album https://zantilla.bandcamp.com/album/zantilla. Maggie is a dog for whom they were collecting donations for a medical operation https://zantilla.bandcamp.com/track/maggie-vs-the-stone-giants. The vibe of the melody, the word Quest and the similar situation where the hero has to do something to survive possibly has a reference to the game Castlevania II: Simon's Quest.