Among the many league mechanics that have been integrated into Path of Exile 3.28 Currency’s core game, few are as beloved or as complex as the Temple of Atzoatl. Introduced in the Incursion league, the temple represents a triumph of systems design, combining time travel, dungeon crawling, and player choice into a single cohesive experience. The premise is simple: the player encounters Alva, a master explorer, who opens portals to the past, allowing the player to enter the Vaal civilization’s grand temple before its destruction. Each incursion allows the player to kill a specific architect, changing the layout and rewards of the temple in the present. After twelve incursions, the player can enter the fully realized temple, a sprawling dungeon filled with rooms, monsters, and bosses determined by the player’s previous choices.

The genius of the Temple of Atzoatl lies in its decision tree. Each incursion presents a choice between two architects, each representing a different room type. Killing the Architect of Corruption might convert a room into a Corruption Chamber, which offers the ability to double-corrupt items. Killing the Architect of War might convert the same room into a War Room, which fills the temple with additional soldiers and rewards. The player’s choice determines not only which room appears in the final temple but also the room’s tier. A room visited multiple times during incursions can be upgraded from tier one to tier three, unlocking the most powerful rewards. The system encourages planning and prioritization; a player who wants a specific room, such as the Doryani’s Institute for double-corrupting gems, must focus on that room during their incursions, potentially at the cost of other valuable rooms.

The final temple is a massive dungeon, with up to eleven interconnected rooms. The layout is semi-randomized, generated based on the player’s incursion choices. Rooms are connected by doors, some of which may be locked or collapsed, requiring the player to find alternate paths. The temple culminates in the Apex, a boss room containing the Temple’s final encounter. The boss, the Omnitect, is a construct powered by the temple itself, with abilities that vary based on which rooms were built. A temple with a Lightning Workshop, for example, might give the Omnitect powerful lightning attacks. A temple with a Hatchery might fill the boss arena with summoned minions. This variability ensures that no two temple runs are identical, even for the same player.

The rewards from the Temple of Atzoatl are among the most valuable in Path of Exile. The Corruption Chamber allows players to double-corrupt items, applying two vaal implicits at the cost of potentially destroying the item. The Doryani’s Institute offers a similar service for gems, with the chance to create level 21, 23% quality gems. The Sacrificial Chamber allows players to sacrifice a unique item for a chance to receive a different unique, including league-specific items that are otherwise unobtainable. The Treasury, the Map Room, and the Storage Room offer large quantities of currency, maps, and items. A well-rolled temple can be more profitable than hours of mapping, making temple running a popular endgame activity.

The Temple of Atzoatl is not without its frustrations. The incursion timer, which limits the player to a few seconds per incursion, can be stressful, particularly for slower builds. The final temple, while rewarding, can be tedious to clear, with backtracking through empty rooms. The system’s complexity can be overwhelming for new players, who may not understand which architects to prioritize. Yet for players who invest the time to learn the system, the Temple of Atzoatl offers a unique and satisfying endgame loop, a dungeon that the player builds themselves, room by room, choice by choice. In Path of Exile, few experiences match the satisfaction of opening a perfectly rolled temple, walking through its halls, and claiming the treasures within. The Vaal civilization may be dead, but in the Temple of Atzoatl, its legacy lives on.