It is the year 20XX...
A mysterious extraterrestrial race, later revealed to be the Xiliens, have suddenly invaded Earth.
Humanity is headed for extinction...
The crisis is also close to wiping out Earth's own ecosystem.
Now, humanity and monsters rise to take back the planet.

Taking the role as the commander of G-Force and guided by the Navigator, the player must control many powerful monsters to strike back against the alien menace and save the remnants of the human race.

• Free-to-play RPG with optional in-app purchases to spin for monsters or buy special power-ups
• Ability to register friends and use their favorited monsters in your battles
• Over 100 monsters to collect
• Special events to collect limited-time monsters
• Able to awaken the skills of and attach power cores to monsters to make them even more powerful
• Ability to back-up and transfer data to other mobile devices using a unique player ID
• A "Manual" battle feature to tackle in-game areas via touch screen input, and an "Auto" battle feature to breeze through areas with optional user interaction

Tap screen : General interaction (menu buttons, attacks)
Slide screen : Scroll through lists

	: App Store (iOS) [Japan only] *
	: Google Play (Android) [Japan only] *

* On April 21, 2016, Godzilla Kaiju Collection servers went offline indefinitely. Players who still own the game are greeted with a page that notifies them of the shutdown and thanks them for playing the game. It also notes to visit the official site for details and features two buttons, one which leads to the official site and another to customer service. This notification page can be seen here.