Set in the future, chaotic warfare has engulfed the universe. The world is ripe with strife as gigantic mecha called Mobile Suits march to war on land and in space. Featuring characters and mecha from over 30 years of Gundam anime and manga series, Dynasty Warriors: Gundam 3 thrusts players into the galactic melee with over 50 playable and upgradable characters and over 70 playable and upgradeable Mobile Suits combed from the Gundam universe. New additions include Mobile Suits from Mobile Suit Gundam 00, Mobile Suit Gundam UC and many more.

Dynasty Warriors: Gundam 3 also features a number of gameplay additions to the series, including three brand new featured systems, including the Partner Strike, Emergency Dash and Recovery Gauge Systems, which will bring a new level of tactical engagement to the series. Partner Strike System will enable the player to summon partner characters to the battlefield to assist at crucial moments, affecting your character's current melee engagement or possibly the overall battlefield conditions for your army. Emergency Dash System will allow players to execute new cancel and evasion moves negating enemy attacks. This system will bring a new level to gameplay since powerful combos can be more easily parried. The new Recovery System enables players to recover armor during battle allowing players more flexibility in their tactics on the battlefield.

Additionally, Dynasty Warriors: Gundam 3 brings a new strategy facet to gameplay. Battlefields now incorporate multiple facilities with various functions. Capturing these locations will change the battlefield conditions and turn the tide of the battle in your favor. Players will be also able to use a new Chain Explosion System to engulf their enemies in a maelstrom of fury!  By initiating an explosion via certain attacks, players will be able to cause further carnage with their own chain of explosions.  Skillful players can use this system to finish off entire squads of Mobile Suits in one blow, thus turning the tide of battle in their favor! Furthermore, players can take their favorite Mobile Suits and engage others in head–to-head action in online versus mode and up to four player online multiplayer campaign mode.