No One's Earth is a 2.5D action/adventure Metroidvania set in a post-post-apocalyptic Earth, which had been dominated by two alien races and are now at war.
Play as Harlie Jamoor, a member of the team responsible for evaluate the habitability conditions of the Earth, coming from the space colony that shelters the human refugees from the climatic catastrophes that occurred on Earth. Harlie must rescue team members who have entered the Earth and mysteriously lost contact with the ship.

• Explore the abandoned CCTA (Climatic Control Testing Area), looking for the plants to complete the mission to help the Nularis so they can help to rescue your team.am.
  
• Watch closely and shoot anything that looks suspicious, dangerous enemies, or secret places.
  
• With just a visual reference and a brief description, venture through all of CCTA's natural and artificial alien environments to find the plants almost hidden across the map that can save the Nularis from extinction.
  
• Acquire new abilities that need to be well managed by the consumption of the two types of energy that circulate through your suit, which can be expanded and also affect map progression.
  
• Survive the dangerous animals and security systems, which will try to stop you at all costs to prevent you from causing damage to the valuable species preserved in CCTA.
  
• Be careful with the movement of the Ceresti, responsible for creating the virus that puts the existence of Nularis at risk. Avoid getting their attention, run away, or fight them if you are capable.