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Many features in OUTERPLANE are not available right away. Here is a quick overview of when each mode unlocks during the story.
| Mode | Unlock Condition | Description |
|---|---|---|
| Guild | S1-1-8 : Prisoners | Join or create a guild |
| Base | S1-3-1 : Gathering Supplies | Craft, Ether generator, Shop, Synchro Room, Expedition, Quirk |
| Event Dungeon | S1-3-5 : Finding Blacksmith | Allows entry to event dungeons |
| Skyward Tower | S1-3-13 : Her Name is Alpha | Monthly reset tower with rewards + obtain Sigma |
| Arena | S1-4-6 : The Commander’s Sophistry | PvP mode against AI defense team |
| The Archdemon's Ruins: The Deeps | S1-5-1 : Onwards to Magnolia | Various one-time rewards |
| Talisman | S1-5-1 : Onwards to Magnolia | Unlock the talisman equipment slot |
| Challenge! Special Request: Ecology Study | S1-5-5 : A Temporary Truce | Main place to farm armor sets |
| Challenge! Special Request: Identification | S1-5-5 : A Temporary Truce | Main place to farm weapons and accessories |
| Defeat the Doppelgänger | S1-6-5 : Pass | Obtain hero pieces to transcend heroes |
| The Archdemon's Ruins: The Infinite Corridor | S1-6-12 : Laplace Magnolia | Rewards every 3 days (cooldown) |
| Synchro Room | S1-7-5 : An Unjust Fight | Enhance level and skills of chosen heroes |
| Elemental Tower | S1-7-5 : An Unjust Fight | Element-specific challenge towers with upgrade materials |
| Joint Challenge | S1-8-5 : Puppet | Co-op mode across the server |
| Terminus Isle | S1-9-5 : The Responsibility of the Guilty | Obtain Quirk and Precise Craft resources |
| Precise Craft | S1-9-5 : The Responsibility of the Guilty | Craft specific gear pieces |
| Quirk | S1-9-5 : The Responsibility of the Guilty | Account-wide bonuses (hero stats, stamina, drop rate, etc.) |
| World Boss | S1-10-14 : An Automaton’s Wish | Battle with 8 heroes and rank against other players |
| Adventure License | S1-10-14 : An Automaton’s Wish | Weekly challenge mode with various rewards |
| Irregular Extermination | S2-10-15 : Unchanging | Various rewards and exclusive weapons and accessories |