Catalog
Killing Floor 2

Killing Floor 2

Live

ShootersActionMelee action

Platforms
Release:
2015
Scale:
Average concurrent players4,560
Player rating:
88.3% · 129.3K
Profile data as of:
August 29, 2026

In KILLING FLOOR 2, players descend into continental Europe after it has been overrun by horrific, murderous clones called Zeds that were created by rogue elements of the Horzine Corporation. 6-player Co-Op & 12-player VS Zed-slaughtering mayhem.

Official website

Screenshots

Images from the source page, in source order. Select an image to view it full size.

Videos

Videos from the game’s source page, in source order. Select one to open the original.

Overview

Franchise
Unknown
Release date
  • Windows — 2015
  • PlayStation 4 — 2016
  • Xbox One — 2017
Age rating
  • ESRB M — Mature 17+ · Steam Store
  • PEGI 18 — age 18+ · Steam Store
  • USK 18 — age 18+ · Steam Store
Content warnings
Not specified by the storefront
Interaction modes
Single-playerMultiplayerOnline PvPOnline co-op
Session capacity
Unknown
Access model
  • One-time purchase
Monetization
  • In-app purchases
Storefront price
  • $2.99$29.99 −90 % Steam, US storefront
Store contents
  • 307 Achievements, 5 DLC · Steam Store, August 29, 2026
Languages
EnglishRussianGermanFrenchSpanishPortuguese, BrazilItalianPolishJapaneseKorean

Classification

Genres
ShootersActionMelee action
Evidence:
Setting and subject matter
Post-apocalyptic, Zombies
Camera
Unknown
Visual style
Unknown
Combat system type
Shooting, Melee combat

Scale

Concurrent players · period average

4,560

August 16, 2026 — September 15, 2026

under 100over 1 million
Detailed value
4,560.27
Coverage
Steam
Origin
Published by source
Confidence
Medium — The site's calculation method is not published
Basis
Average concurrent Steam players over 30 days from Steam Charts: 4,560
Date observed
September 15, 2026
Source
Steam Charts

Concurrent players · period peak

6,360

August 16, 2026 — September 15, 2026

under 100over 1 million
Detailed value
6,361
Coverage
Steam
Origin
Published by source
Confidence
Medium — The site's calculation method is not published
Basis
Peak concurrent Steam players over 30 days from Steam Charts: 6,361
Date observed
September 15, 2026
Source
Steam Charts
Ratings
  • players88.3% · 129.3KSteam, US storefront · Steam reviews
  • critics75%Steam, US storefront · Steam Store
Last update

Concurrent players

period average · February 2013 — August 2026 · Steam · published by source · Steam Charts

12,8000
February 2013August 2026
Change over period
×86734.6increase from 0.1 (February 2013) to 4,340 (August 2026)
Gaps
  • No data for 7 months: September 2014 — March 2015
Observations
156

Mechanics

Key game systems from the Mechanics Catalog. Assessment axes are independent and are not combined into a single score. An unassessed mechanic is unknown, not absent.

  • A persistent player organization created or recognized by the game itself, with a stable membership, a life beyond one session, a shared identity, functions, and goals.

    For Killing Floor 2, the reviewed Tripwire Interactive material does not establish whether the observed product line contains a persistent in-game player organization with membership, identity, and collective action.

    Access cost:
    Unknown
    Product horizon:
    Unknown
    Depth:
    Unknown
    Core experience relevance:
    Unknown
    Observed adoption:
    Unknown— The checked mechanic-specific material provides neither a compatible participant numerator, an active-audience denominator, nor source coverage sufficient to estimate adoption.
    Structural expectation:
    Unknown
    Player dependency:
    Unknown
    Change direction:
    Not assessed
    Assessment type:
    Unknown
    Confidence:
    Insufficient data— The reviewed Tripwire Interactive material is insufficient to establish presence or absence. Silence was not treated as absence.

    research draft · methodology 0.4 · September 2, 2026

  • An in-game system where player decisions materially influence at least part of the production, supply, distribution, or price of in-game value.

    For Killing Floor 2, the reviewed Tripwire Interactive material does not establish whether the observed product line contains in-game transfer of value between players with rules affecting allocation or price.

    Access cost:
    Unknown
    Product horizon:
    Unknown
    Depth:
    Unknown
    Core experience relevance:
    Unknown
    Observed adoption:
    Unknown— The checked mechanic-specific material provides neither a compatible participant numerator, an active-audience denominator, nor source coverage sufficient to estimate adoption.
    Structural expectation:
    Unknown
    Player dependency:
    Unknown
    Change direction:
    Not assessed
    Assessment type:
    Unknown
    Confidence:
    Insufficient data— The reviewed Tripwire Interactive material is insufficient to establish presence or absence. Silence was not treated as absence.

    research draft · methodology 0.2 · September 2, 2026

  • A system where players or organizations capture, hold, and use parts of the game world with lasting consequences.

    Official-source search did not resolve transferable, contestable ownership that persists beyond one session for this product boundary. Silence was not treated as absence.

    Access cost:
    Unknown
    Product horizon:
    Unknown
    Depth:
    Unknown
    Core experience relevance:
    Unknown
    Observed adoption:
    Unknown— Adoption reach is unmeasured: primary sources provide neither unique participants nor a compatible active-audience denominator.
    Structural expectation:
    Unknown
    Player dependency:
    Unknown
    Change direction:
    Unknown
    Assessment type:
    Unknown
    Confidence:
    Insufficient data— On 2026-09-02, official-domain mechanic-specific searches for Killing Floor 2 did not yield indexed primary evidence resolving Presence. Secondary sources were excluded.

    research draft · methodology 0.3 · September 2, 2026

  • Structured competition between players with rules and a measurable outcome, usually including skill-based matchmaking.

    Official evidence confirms only part of the structured PvP boundary: structured formats. Missing conditions were not inferred.

    Access cost:
    Unknown
    Product horizon:
    Unknown
    Depth:
    at most 1 of 5 — Casual matches
    What limits the result:
    Rating and ladder: Component rating_ladder remains Unknown after mechanic-specific research; the next level’s mandatory condition is not satisfied.
    Partial presence exception:
    Evidence establishes only the cited part of structured PvP; the missing cross-match or rules boundary was not inferred.
    Core experience relevance:
    Unknown
    Observed adoption:
    Unknown— Adoption reach is unmeasured: primary sources provide neither unique participants nor a compatible active-audience denominator.
    Structural expectation:
    Unknown
    Player dependency:
    Unknown
    Change direction:
    Unknown
    Assessment type:
    Unknown
    Confidence:
    Medium— 1 primary URL was reviewed on 2026-09-02. Each populated claim is bounded by its exact excerpt; unresolved values remain Unknown.

    Component scores (0–4):

    • Competitive formats1 of 4 — Score 1 for structured formats is bounded by the cited official claim: “A 12 player PvP mode where two teams take turns playing Humans …”
    • MatchmakingNot assessed — Primary evidence did not resolve opponent matchmaking; retained as Unknown.
    • Rating and ladderNot assessed — Primary evidence did not resolve a recorded rating or leaderboard; retained as Unknown.
    • Seasons and rewardsNot assessed — Primary evidence did not resolve seasonal competition and rewards; retained as Unknown.
    • Competitive integrityNot assessed — Primary evidence did not resolve competition-integrity controls; retained as Unknown.
    • Skill expressionNot assessed — Primary evidence did not resolve skill differentiation; retained as Unknown.
    • Game integrationNot assessed — Primary evidence did not resolve links to other game loops; retained as Unknown.

    research draft · methodology 0.3 · September 2, 2026

  • A regular rhythm of meaningful updates, including seasons, patches, events, and a roadmap that supports a long product life.

    The targeted source check did not establish dated substantive releases for Killing Floor 2 within the 2025-09-02 to 2026-09-02 window. Silence was not classified as absence.

    Access cost:
    Unknown
    Product horizon:
    Unknown
    Depth:
    Unknown
    Core experience relevance:
    Unknown
    Observed adoption:
    Unknown— The checked mechanic-specific material provides neither a compatible participant numerator, an active-audience denominator, nor source coverage sufficient to estimate adoption.
    Structural expectation:
    Unknown
    Player dependency:
    Unknown
    Change direction:
    Not assessed
    Assessment type:
    Unknown
    Confidence:
    Insufficient data— A mechanic-specific primary source was checked, but it did not establish both required criteria or an explicit negative statement.

    Component scores (0–4):

    • Release cadenceNot assessed
    • Release announcementsNot assessed
    • Content scope and typeNot assessed
    • Seasonal structureNot assessed
    • Event calendarNot assessed
    • Roadmap transparencyNot assessed
    • Response to playersNot assessed
    • Game integrationNot assessed

    research draft · methodology 0.3 · September 2, 2026

  • A system for long-term character or account development through levels, skills, equipment, and specializations.

    The targeted source check did not establish persistent cross-session progression that changes gameplay capabilities in Killing Floor 2. Silence was not classified as absence.

    Access cost:
    Unknown
    Product horizon:
    Unknown
    Depth:
    Unknown
    Encounter mode (record 1):
    Unknown— The checked source does not establish a specific player encounter contour.
    Progression role dimension in an encounter (record 1):
    Unknown— The source does not establish progression effects for either gear-and-stats or roster-and-roles.
    Progression role in an encounter (record 1):
    Unknown— Normalization, advantage, or a horizontal progression role in an encounter is not established.
    Core experience relevance:
    Unknown
    Observed adoption:
    Unknown— The checked mechanic-specific material provides neither a compatible participant numerator, an active-audience denominator, nor source coverage sufficient to estimate adoption.
    Structural expectation:
    Unknown
    Player dependency:
    Unknown
    Change direction:
    Not assessed
    Assessment type:
    Unknown
    Confidence:
    Insufficient data— A mechanic-specific primary source was checked, but it did not establish both required criteria or an explicit negative statement.

    Component scores (0–4):

    • Path length and structureNot assessed
    • Progression axesNot assessed
    • Specialization choiceNot assessed
    • Role of equipmentNot assessed
    • Progression sourcesNot assessed
    • Progress persistence and carry-overNot assessed
    • Game integrationNot assessed

    research draft · methodology 0.3 · September 2, 2026

RealmScanner is a research catalog for multiplayer games. Data comes from public sources; coverage and evidence appear beside each assessment.