How is this game a platformer, what spin does it bring to the genre?
Metaform is a 2D platformer where you move forward, jump, and fall through increasingly complex levels. The twist is that you can switch between 4 different forms at any time (Ball, Spike, Weight, Plane), each form having its own movements, speed, and gravity. You need to find the right form at the right time to progress and optimize your time. ...

What theme does this game use? also explain how you implemented the theme
Metaform uses both themes — Speedrun and Metamorphosis.

Metamorphosis: The main mechanic is shape-shifting. The player can transform into 4 forms (Ball, Spike, Weight, Plane), each with different movements, speed, and gravity.
Speedrun: Every level has a timer. The goal is to finish each level as fast as possible and beat your best time.

Did you use any AI or PREMADE assets in this game?
No AI or pre-made assets were used. Everything was created from scratch during the jam — code, art, level design, and game design were all done by our team in one week. Except for the music by DELOSound because we didn't have any music (he was credited).