AutoArena 3D
UPDATE · 1.3v

1.3v Update — Rebuilt Battlefields, New Choices and Stories

All 12 battlefields rebuilt, 61 new augments, reworked race and class synergies, expanded story content, and an Endless Expedition with an augment choice every stage. Here are the changes since v1.2, up to build 255.

1.3v · Released ·

01All 12 Battlefields Rebuilt

The left image is an archived pre-rework screenshot; the right shows the rebuilt map in-game. Each pair shows the same region, but resolution, formation, HUD, and progress differ. No content has been cropped out or composited.

These comparisons preserve the original gameplay screenshots, so some images contain Korean UI.

Story 1Azure Kingdom Banquet Hall

Before · Azure Kingdom Banquet Hall
Before · Azure Kingdom Banquet HallView full size ↗
1.3v · Azure Kingdom Banquet Hall
1.3v · Azure Kingdom Banquet HallView full size ↗

A battlefield with a central carpet and a few wall decorations is now a royal banquet hall framed by a gate, banquet tables, and heraldic pillars. Guards stand in front of the gate, and the pillars are evenly spaced.

Story 2Brassheart Royal Workshop

Before · Brassheart Royal Workshop
Before · Brassheart Royal WorkshopView full size ↗
1.3v · Brassheart Royal Workshop
1.3v · Brassheart Royal WorkshopView full size ↗

The workshop walls and piles of parts now surround a fuller workspace with benches, mounting stands, and machinery. Portals and sparks from a broken robot hint at the disturbances in this region.

Story 3Red Wagon Bandit Camp

Before · Red Wagon Bandit Camp
Before · Red Wagon Bandit CampView full size ↗
1.3v · Red Wagon Bandit Camp
1.3v · Red Wagon Bandit CampView full size ↗

Scattered carts and tents have become a camp enclosed by a wooden palisade. Supplies, a campfire, and a seated bandit bring it to life, with space reserved for the trap-detection device that units can stand on.

Story 4Fox Tail Tavern

Before · Fox Tail Tavern
Before · Fox Tail TavernView full size ↗
1.3v · Fox Tail Tavern
1.3v · Fox Tail TavernView full size ↗

A backdrop of barrels and wall decorations is now an indoor tavern with a bar, tables, and chairs. Residents and beastfolk children watch the battlefield.

Story 5Ironvein Mineral Cavern

Before · Ironvein Mineral Cavern
Before · Ironvein Mineral CavernView full size ↗
1.3v · Ironvein Mineral Cavern
1.3v · Ironvein Mineral CavernView full size ↗

Small mineral and mine props have given way to a cavern surrounded by rock faces, mine entrances, and hauling equipment. An open area is reserved for the collapse mechanic.

Story 6Traveling Troupe of Laughter

Before · Traveling Troupe of Laughter
Before · Traveling Troupe of LaughterView full size ↗
1.3v · Traveling Troupe of Laughter
1.3v · Traveling Troupe of LaughterView full size ↗

Blue tiles and platforms have become a circus with tents, performance props, and gift boxes. Balloons float overhead, and the Clown’s Helpers stand clear of the scenery.

Story 7Ruined Fortress Graveyard

Before · Ruined Fortress Graveyard
Before · Ruined Fortress GraveyardView full size ↗
1.3v · Ruined Fortress Graveyard
1.3v · Ruined Fortress GraveyardView full size ↗

Small shrines and gravestones have become a graveyard lined with fortress walls, stone tombs, coffins, and lanterns. A skeletal hand periodically emerges and retreats in the open space near the coffins.

Story 8Frozen Throne Snowfield

Before · Frozen Throne Snowfield
Before · Frozen Throne SnowfieldView full size ↗
1.3v · Frozen Throne Snowfield
1.3v · Frozen Throne SnowfieldView full size ↗

The ice throne and rocks have become a frozen court with white stairs, pillars, and statues. The stairs are centered, the pillars match in size and spacing, and the upper candle lights are symmetrical.

Endless onlyMoonshade Otherkin Altar

Before · Moonshade Otherkin Altar
Before · Moonshade Otherkin AltarView full size ↗
1.3v · Moonshade Otherkin Altar
1.3v · Moonshade Otherkin AltarView full size ↗

Cauldrons, mushrooms, and a workbench add signs of daily life among the trees and altar. In the surrounding open space, an Elf watches the arena and appears and disappears with Moonlight Leap.

Endless onlyAncient Guardian Forest

Before · Ancient Guardian Forest
Before · Ancient Guardian ForestView full size ↗
1.3v · Ancient Guardian Forest
1.3v · Ancient Guardian ForestView full size ↗

Small clusters of trees and waterways have become a forest enclosed by tall trees and rocks. The hex-grid floor blends into the forest ground.

Endless onlyRed Sand Travelers' Oasis

Before · Red Sand Travelers' Oasis
Before · Red Sand Travelers' OasisView full size ↗
1.3v · Red Sand Travelers' Oasis
1.3v · Red Sand Travelers' OasisView full size ↗

A well and aqueduct have become a desert rest stop with tents, carts, supplies, and a waterside area.

EXAbandoned Mine of the Red Star

Before · Abandoned Mine of the Red Star
Before · Abandoned Mine of the Red StarView full size ↗
1.3v · Abandoned Mine of the Red Star
1.3v · Abandoned Mine of the Red StarView full size ↗

The red ground and distant base modules have become an abandoned base closely surrounded by gates, pipes, and mining equipment.

0261 New Augments

Before · Augment Selection
Before · Augment SelectionView full size ↗
1.3v · Augment Selection
1.3v · Augment SelectionView full size ↗

A comparison of layout and readability. The displayed augment choices differ.

6 Older Augments Removed from the Catalog

The King's Helm · Bouncing Bones · Rite of the Bone Moon · Pact of the Bone Colossus · Frozen King of Otherkin · Return of the Black Knights

The three contract summons have been reworked around the 10-unit Kingdom, Skeleton, and Otherkin synergy goals. See the Codex for their detailed effects.

03Race and Class Synergies Reworked — Distinct Strategies and Matchups

8 Races — From v1.2 to 1.3v
RaceBeforeCurrent Concept and Strategy
KingdomStat boosts such as Armor, Magic Defense, and HPGain unique Kingdom equipment as the synergy tier increases, without duplicates. The armory puts the choice of who receives each piece of equipment at the center of your strategy.
MachineSpell Power, Attack Speed, and a shield at battle startAt low HP, Emergency Activation briefly grants Damage Immunity and removes enemy-applied crowd control. Machines withstand a crisis and return to the fight.
SkeletonRevival prioritized higher-cost units, with some Attack Speed and Lifesteal bonusesThe first Skeletons to fall are the first to rise again. Instead of protecting only high-cost units, the synergy restores your battle line in the order units fall.
BanditEarn a gold chest every 10 direct killsChoose secret dispatches for the effects you need in battle. Higher synergy tiers increase both the number of active dispatches and their strength.
OtherkinIncreased HP and always-active adaptation bonuses by classWhen a unit chosen for Adapt is in danger, frontline units gain a shield and healing, while backline units gain healing. Different bodies and roles provide different ways to survive.
NatureLifesteal, Attack, and Spell Power increasesPlacement on Nature tiles reduces Fatigue, and Nature units heal in a crisis. At higher synergy tiers, all enemies are affected by crowd control after a set time. Terrain and positioning are key.
HiveAttack Speed, Lifesteal, Attack, and Spell Power increasesPoison applied by Hive units becomes Spores, and infected enemies provide healing to allied Hive units. Spread the infection to sustain the swarm.
AberrantHP, Magic Defense, Lifesteal, and additional damage when using skillsOn final death, leave a Death Echo on nearby enemies. Aberrants continue to influence the battle after they fall.
4 Classes — Matchup Direction and Synergy Changes
Baseline AdvantageBattle RoleSynergy Rework
Guardian → Ranged ShooterUse Armor to withstand physical attacks and hold the front lineFocuses on Armor. The previous combination of Magic Defense and a starting shield has been streamlined.
Ranged Shooter → Melee WarriorPressure approaching warriors with range and physical firepowerFocuses on Attack. The role is clearer than the previous mix of range, Attack Speed, ricochets, and other effects.
Melee Warrior → Mana CasterUse Magic Defense to endure spells and apply melee pressureBoosts Magic Defense and Attack Speed, replacing the previous focus on Attack, Lifesteal, and additional strikes.
Offensive Mana Caster → GuardianUse Spell Power and magic damage against a front line built to resist physical attacksBoosts starting Mana. Offensive casters retain their spell-damage role, while support casters focus on healing and support skills.

04Expanded Story — 23 Comics, 97 Panels, and 61 Dialogue Scenes

1.3v · Expedition Introduction Comic
1.3v · Expedition Introduction ComicView full size ↗
1.3v · Regional Introduction Comic
1.3v · Regional Introduction ComicView full size ↗

Both images show comics from the current version. The 23 comics include replacements for earlier comics. Dialogue counts cover story and EX conversations only, excluding comic speech bubbles and training instructions.

05Endless Expedition Reworked — Keep Growing with Every Stage’s Choices

1.3v · Depth 2
1.3v · Depth 2View full size ↗
1.3v · Depth 26
1.3v · Depth 26View full size ↗

A comparison of shallow and deep levels in the current version. The fog does not remain on the battlefield or in the shop.

How Was Difficulty Adjusted?

06Quality of Life and Major Fixes

The current shop screen. A still image shows the layout; the difference in reroll speed can be experienced during play.View full size ↗

The current shop screen. A still image shows the layout; the difference in reroll speed can be experienced during play.

Shop, Bench, and Placement

Descriptions, Screens, and Languages

Progression

Major Fixes

Save Data Notice

Existing save data and expedition progress are retained. Please update the installed app rather than deleting and reinstalling it.