ShooterofIO Zombies
ShooterofIO Zombies, also known as Zombies or originally as Operations in ShooterofIO 1: Modern Ops (2023), is a recurring cooperative game mode in the ShooterofIO series. It is best known for being developed by Air Studios in collaboration with SOI Studios. The mode pits players against endless waves of undead enemies, with gameplay centered around surviving for as long as possible while gradually acquiring stronger weapons, abilities, and perks. Killing zombies grants the player points that can be spent on weapons, opening new areas of the map, and purchasing utilities.
The mode was first introduced in ShooterofIO: Dark Warfare (2024), which launched the ongoing Dark Aether Saga storyline. Prior to this, the series’ first game, ShooterofIO 1: Modern Ops (2023), featured a precursor of the mode under the title "Operations". Since then, Zombies has become a staple of the franchise, appearing in multiple entries with unique maps, progression systems, and overarching narrative arcs.
Overview
Gameplay
Zombies is a co-op survival mode where up to four players must fend off increasingly difficult rounds of undead enemies. Players typically begin a match with a low-tier weapon (often a pistol or loadout gun of low rarity) and must accumulate points by killing zombies. These points are spent on unlocking new map areas, acquiring stronger weapons, and purchasing "Perk-a-Colas", which enhance player abilities.
Classic gameplay staples include the "Mystery Box", which gives players a random weapon, and the "Pack-a-Punch" machine, which upgrades weapons. Power-ups such as "Max Ammo", "Insta-Kill", "Double Points", and "Nuke" also appear at random. Later versions introduced meta-systems like Augments, which allow for permanent progression and additional abilities outside of matches.
Maps often feature easter eggs ranging from hidden songs to elaborate questlines that progress the storyline. Each new release typically adds its own Wonder Weapon, a powerful unique gun or tool tied to its map.
Setting
Zombies maps in the ShooterofIO series are set in diverse global and fantastical locations, often tied to the ongoing Dark Aether storyline. Settings range from jungles and palaces to rivers cutting through cities and entire collapsing towns. The overarching plot, known as the Dark Aether Saga, features characters such as Noah Mad, Samantha Voss, Jessica Carver, William Peck, and Edward Richtofen as they battle to prevent dimensional rifts from merging reality with the Dark Aether.
History
ShooterofIO 1: Modern Ops and Operations (2023)
The earliest form of Zombies in the franchise appeared in ShooterofIO 1: Modern Ops (2023) under the name "Operations". Unlike later round-based entries, Operations was an open world player versus environment (PvE) mode structured similarly to the "DMZ" mode from Call of Duty: Warzone (2022). Up to 24 players entered a large-scale map—also used as the title’s battle royale environment—playing as separate squads. Within the match, teams could tackle zombies and AI-controlled human enemies while completing objectives across different zones of varying threat levels.
Rather than traditional waves, gameplay revolved around timed sessions. Each match lasted 45 minutes before an "Aether Storm" began to close in, forcing players to either extract within the final 15 minutes or risk losing their loot. Core Zombies mechanics, such as weapon wallbuys, the Mystery Box, and Perk-a-Colas, were retained. Operations also introduced the concepts of "acquisitions", items that could be extracted for later use, and "schematics", blueprints that allowed players to craft equipment after a cooldown period. In addition to sandbox objectives, players could engage with story quests that advanced the overarching narrative.
ShooterofIO: Dark Warfare and the Dark Aether Saga (2024)
ShooterofIO: Dark Warfare (2024) was originally intended to expand upon the Operations concept from Modern Ops. Early design documents carried over the open-world foundation, renaming the mode to "Zombies" while introducing contracts, objective-based missions, and a larger extraction-style economy system. However, during prototyping, developers at Air Studios encountered difficulties reconciling the Operations format with the darker, more cinematic tone of Dark Warfare. Extensive playtesting revealed that players preferred the escalating tension of wave-based survival over completing contract chains. Internal surveys reported that testers enjoyed “fighting until the last bullet” far more than extracting loot.
By mid-2023, the design pivoted. The studio condensed the map structure and abandoned the session timer in favor of increasingly difficult enemy waves. This round-based system preserved hallmark mechanics such as wallbuys, the Mystery Box, and Perk-a-Colas, while creating a tighter, more replayable survival loop. Developers later described the shift as “a return to tension,” emphasizing pacing, replayability, and the horror roots of the series. The mode launched with two maps—"Undead Forest" and "Der Palace"—with additional maps added in subsequent updates: "Turm der Toten" (December 16, 2024), "Origins" (January 24, 2025), "Der River" (April 3, 2025), "Boomtown Zombies" (Season 04), and the final map, "Foldpoint" (Season 05).
Games
- As a mode
- ShooterofIO 1: Modern Ops (2023) – as Operations
- ShooterofIO: Dark Warfare (2024)
Maps
- Undead Forest
- Der Palace
- Turm der Toten
- Origins
- Der River
- Boomtown Zombies
- Foldpoint
Reception
Zombies has been described as one of the most popular components of the ShooterofIO franchise, with dedicated communities focused on solving its easter eggs and pursuing high-round survival records. Critics praised its debut in Dark Warfare for delivering fast-paced replayability and a deep progression system via Augments, though some noted that its steep difficulty curve was daunting for casual players.
Associated media
Although primarily part of the main games, the Zombies storyline has expanded through promotional trailers, developer blogs, and tie-in content. A full comic or standalone adaptation has not yet been released, though fan communities have produced extensive documentation of the Dark Aether Saga.