Starquake meets Furry of the Furries and Montezuma’s Revenge by Yatchan’s After Five Gamedev

DeepCore is an old school platformer/adventure game, inspired by
such classics as Starquake, Montezuma’s Revenge and Fury of the Furries.

Navigate your character through a set of dangerous caves, to reach
the Core Control Room and save your planet. Morph into different colour
forms with distinct abilities to help you in your quest.

Download, here

Source:   https://yatchan.itch.io/deepcore