
Earth Defense Force, known in Japan as Chikyū Bōeigun , is a series of third-person shooter video games. The series is published by the Japanese company D3 Publisher as part of the Simple series.

Earth Defense Force 2017 is a third-person shooter developed by Sandlot, and published by D3 Publisher, for the Xbox 360. It is the follow-up to Global Defence Force, and is the first game in the Earth Defense Force series to be released in North America. Earth Defense Force 3 was the best selling Games on Demand game in Japan for 2009. The game was released on the PlayStation Vita in Japan on 27 September 2012. It was released digital-only in North America on January 8, 2013 and in the PAL region on January 16, 2013. A port of the game is planned to be released for the Nintendo Switch in Japan on October 14, 2021.

Earth Defense Force 2025 is a third-person shooter developed by Sandlot and published by D3 Publisher, for the PlayStation 3 and Xbox 360. It is the follow-up to Earth Defense Force 2017. A remastered version, titled Earth Defense Force 4.1: The Shadow of New Despair, was released for PlayStation 4 and Windows in 2016, which includes the original game as well as a new expansion. A Nintendo Switch version is planned to be released in Japan in 2022. A reboot titled Earth Defense Force 5 was released on December 7, 2017.

Earth Defense Force 5 is the fifth main installment, and the eighth game in the Earth Defense Force video game series. Developed by Sandlot and published by D3 Publisher, the game was released for the PlayStation 4 in Japan on December 7, 2017. The game was released simultaneously in the United States, Europe, China, and South Korea on December 11, 2018, as a digital exclusive for the PlayStation 4. Earth Defense Force 5 departs from the continuity established by Earth Defense Force 2017 and Earth Defense Force 2025/4.1, and is set in a new continuity where the Earth Defense Force is a private military corporation and sees action for the first time in the year 2022.

Earth Defense Force: Insect Armageddon is a third-person shooter developed by Vicious Cycle Software, and published by D3 Publisher, for the PlayStation 3, Xbox 360 and Microsoft Windows. It is a spinoff built around the concept of "What if Americans made EDF" and has no story or setting connection to the numbered series.

Earth Defense Force: Iron Rain is a third-person shooter video game developed by Yuke's and published by D3 Publisher for the PlayStation 4. It is a spin-off of the Earth Defense Force series, similar to Earth Defense Force: Insect Armageddon, geared more toward Western audiences with a more serious tone compared to the main series by Sandlot. A Japanese release date was initially set for late 2018, but the game was delayed into 2019. It was released simultaneously worldwide on April 11, 2019.

Global Defence Force is a PlayStation 2 third-person shooter video game developed by Sandlot. The game was originally published as The Chikyū Bōeigun 2 in Japan by D3 Publisher, as volume 81 of the Simple 2000 series of budget games. It was later released in Europe by Essential Games, the brand created by D3 Publisher to publish Simple 2000 series games in Europe.

Global Defence Force Tactics, known in Japan as Earth Defense Force Tactics, is a PlayStation 2 turn-based strategy game developed by thinkArts.