idou Senshi Gundam SEED: Tomo to Kimi to Koko de is based on the "Mobile Suit Gundam SEED" anime series. The game allows players to experience alternative storylines and scenarios from the anime. Players interact with characters from the series, making choices that can lead to different outcomes.

The gameplay features strategic battles where players control various mobile suits, utilizing their unique abilities and weapons. In addition to combat, the game includes adventure elements where players explore different locations and interact with other characters, influencing the narrative through their decisions.