Fantasy Frontier Echo of Cube is a free-to-play PC MMORPG by MoonRabbit Corporation that received four content updates in August 2026, adding new weapons, dungeons, events, Spirits, Eidolons, and progression systems.
Fantasy Frontier Echo of Cube is a free-to-play PC MMORPG operated by MoonRabbit Corporation. Throughout August 2026, the game received a steady stream of content updates, each expanding its systems and seasonal events. On August 7, floors 36 to 40 of the Sky Tower dungeon were added, along with new Time Library chapters and orb enhancement. The Genceco Summer Vacation event introduced login bonuses and the new guardian spirits Gaia and Otohime.
The following week, on August 14, the update introduced the Arcus, a new long-range piercing weapon, plus a 5-player version of the Archive of Time dungeon and the limited-time Love Letter Event. The Rainbow Roulette gained two new Eidolons: Summer Hero Cao Cao and Magic Bullet Serpent Jormungandr. On August 21, summer-themed Spirits joined the roulette: Sacred Summer Archangel Michael (Holy attribute, raises holy skill damage) and Cool Goldfish Princess Akane (Ice attribute, cuts ice damage taken), along with new swimsuit and yukata avatar items.
The most recent update, on August 28, added the Memory Fragments system, which lets players spend Memory Pieces to unlock accumulating stat boosts. It also introduced the high-difficulty Gokumonkyo dungeon, the limited-time Chimawari no Majou nightmare dungeon with clear-time ranking, the wind-attribute spirit Persephone, and the Reminiscence Roulette that recycles past avatars and spirits. This steady cadence kept veteran players engaged with new endgame content and recurring seasonal rewards.
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The PC MMORPG Fantasy Frontier Echo of Cube added the Memory Fragments system, which lets players spend Memory Pieces to unlock stat boosts that accumulate as they progress. The update also adds the Gokumonkyo high-difficulty dungeon, the limited-time Chimawari no Majou nightmare dungeon with a clear-time ranking, the wind-attribute spirit Persephone, and the Reminiscence Roulette for past avatars and spirits.
MoonRabbit Corporation added two new Spirits to the PC MMORPG Fantasy Frontier: Echo of Cube. The Sacred Summer Archangel Michael, a Holy-attribute Spirit who raises holy skill damage, and Cool Goldfish Princess Akane, an Ice-attribute Spirit who cuts ice damage taken, are now in the Rainbow Roulette as of August 19, 2026. New female and male avatars were also introduced.
MoonRabbit Corporation has implemented the new long-range weapon Arcus in Fantasy Frontier Echo of Cube, added a 5-player version of the Archive of Time dungeon, and launched the limited-time Love Letter Event. The Rainbow Roulette now features two new Eidolons: Summer Hero Cao Cao and Magic Bullet Serpent Jormungandr.
MoonRabbit added floors 36 to 40 to the Sky Tower dungeon in Fantasy Frontier Echo of Cube, plus new Time Library chapters, orb enhancement, and the Genceco Summer Vacation event with login bonuses and new guardian spirits Gaia and Otohime.