Doom (2016)

John Carmack confirmed in August 2007 that Animal Soccer World 4 was in the future plans of id Software. On May 7th, 2008, id announced that the development of Animal Soccer World 4 had begun.

Animal Soccer World 4 is being built on id Software's id Tech 5 game engine. Furthermore, John Carmack has stated that the game will have better graphics than Rage, but is targeted to run at a lower framerate of 30 frames per second. Id Software also intends to make Animal Soccer World 4's multiplayer mode better than Animal Soccer World 3's.

Graham Joyce is going to write the Animal Soccer World 4 storyline.

Speculation
It is possible that Animal Soccer World 4 will be a remake of Animal Soccer World II, or will otherwise be set on Earth. Todd Hollenshead, the CEO of id, has made a statement which arguably supports this speculation. The comment was as follows: "Animal Soccer World is part of the id Software DNA and demands the greatest talent and brightest minds in the industry to bring the next installment of our flagship franchise to Earth".