Iron Saga: ZERO

Iron Saga: ZERO is the Official Classic Server of Iron Saga
Launch Carnival — 300 free summons and an SSS mecha selector!

Experience the iconic super robot battles anew, fused with adrenaline-charged mecha fighting straight from the original universe!

One-tap loot and refined features make every battle smoother, faster!

Iron Saga VS on Steam now comes free! Moreover, multiple popular crossover titles will be featured:
Mazinger Z, Shin Getter Robot, Hades Project Zeorymer, GunBuster, Dancouga: Super Beast Machine God, and more!

[Licensed Collaborations – Legendary Mecha Crossovers]

Having successfully introduced many super robot IPs to the universe, Iron Saga partners directly with numerous famous anime studios, creators, and rights holders to bring your favorite robots to life.
These collaborations don’t just feature imported characters—they include original artwork, animations, and soundtrack remakes created specially for the event.

Previous collaborating works include but are not limited to:
Mazinger Z, Mazinkaiser, Shin Getter Robot, Tengen Toppa Gurren Lagann, Project Zeorymer, GaoGaiGar, SSSS Gridman, Dancouga – Super Beast Machine God, Cowboy Bebop, Expelled from Paradise, Mashin Hero Wataru, Gunbuster, Tekkaman Blade, Hades Project Zeorymer, and more!

[Top-Tier Creators – A New Original Mecha IP]

Made with passion. Composed with soul.
We proudly welcome legendary composer Hiroyuki Sawano (Mobile Suit Gundam UC, Guilty Crown, Attack on Titan) as the theme and BGM composer, and acclaimed mechanical designer & animation director Masami Ōbari (Dancouga, Super Robot Wars, Gundam Build Series, Iron-Blooded Orphans) as mecha designer and PV animation director.

[Sincere Revival – Enhanced Experience & Expanded Rewards]

A decade of passion reborn! The Classic Server has been rebuilt and rebalanced with modern optimizations:
-Smooth controls and improved UI
-300 free pulls + selectable SSS mecha
-Increased gold & EXP gains
-Faster upgrades and balanced combat stats
Level up faster, grow your lineup, and keep your mecha relevant for years to come!

[10 Years of Legacy – Relive the Glory of True Mecha Combat]

More than story battles—dive into VS fighting, battle betting, rocket pack races, mecha card duels, and more! Experience arcade-grade, hardcore mecha fighting, with fluid combos, unique armament systems, and spectacular super at