Killing Floor vs OutBreak Zombie
Killing Floor and OutBreak Zombie both land in Action on Steam, which is why they keep getting compared. The comparison below is built from each game's Steam metadata — release year, genres, categories, Steam Deck status, price, and review score — refreshed daily by imho.run's scraper. Headline differences: Both are Action games on Steam. Killing Floor (2009) is 9 years older than OutBreak Zombie (2018). OutBreak Zombie is currently ~75% cheaper on Steam than Killing Floor (4.99 USD vs. 19.99 USD). No login or purchase needed — scroll for the full table, the verdict FAQ, and links to ranked similar games for both titles.
Side-by-side comparison
 Killing Floor |  OutBreak Zombie | |
|---|---|---|
| Released | 2009 | 2018 |
| Genres | Action | Action |
| Platforms | Windows, macOS, Linux | Windows |
| Steam Deck | Deck Playable | Unrated |
| Price | 19.99 USD | 4.99 USD |
| Steam reviews | 96.1% positive (21,597 reviews) | 5 reviews |
| Multiplayer | Multi-player, Cross-Platform Multiplayer, Co-op | Single-player only |
| Developers | Tripwire Interactive | MellowStudios |
Side by side
- Both are Action games on Steam.
- Killing Floor (2009) is 9 years older than OutBreak Zombie (2018).
- OutBreak Zombie is currently ~75% cheaper on Steam than Killing Floor (4.99 USD vs. 19.99 USD).
- Killing Floor has co-op; OutBreak Zombie does not.
- Killing Floor is Deck Playable on Steam Deck; OutBreak Zombie has no Deck rating yet.
Killing Floor vs OutBreak Zombie — FAQ
- Should I play Killing Floor or OutBreak Zombie first?
- If you want chronology, Killing Floor (2009) came out before OutBreak Zombie (2018). If neither is a sequel to the other, order doesn't really matter — start with whichever fits your current mood, since both share enough on Steam to make either a reasonable opener.
- Are Killing Floor and OutBreak Zombie similar?
- They overlap on Action on Steam, so the catalogue groups them together — but "similar" depends on the specific mechanics. Use the genre + category rows above to decide whether the overlap matches what drew you to the one you've already played.
- Does OutBreak Zombie have multiplayer like Killing Floor?
- No. Killing Floor supports multiplayer on Steam (Multi-player, Cross-Platform Multiplayer, Co-op), while OutBreak Zombie is listed as single-player only.
- Does Killing Floor run on Steam Deck?
- Yes — Killing Floor is rated Deck Playable by Valve. OutBreak Zombie doesn't have a Deck rating yet, so its Deck behaviour is currently unverified.