Choose Killing Floor
Choose Killing Floor if you want the Multi-player, Valve Anti-Cheat enabled, and Co-op side of the pairing. On Steam, it has co-op, so you can bring a friend. 21,597 Steam reviews back the pick.
Killing Floor vs Monsters In The Shadows
Killing Floor and Monsters In The Shadows 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 13 years older than Monsters In The Shadows (2022). Monsters In The Shadows is free; Killing Floor is paid (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.
Which should you pick?
Choose Monsters In The Shadows
Choose Monsters In The Shadows if you want a Strategy and Indie experience. On Steam, it's free to play, so the barrier to trying it is zero. Monsters In The Shadows launched in 2022.
Both Killing Floor and Monsters In The Shadows sit in Action on Steam, so either pick lands in the same broad neighborhood. Use the side-by-side table for the feature view, or follow the "Games like" links below to see ranked alternatives for either title.
Side-by-side comparison
 Killing Floor |  Monsters In The Shadows | |
|---|---|---|
| Released | 2009 | 2022 |
| Genres | Action | Action, Strategy, Indie |
| Platforms | Windows, macOS, Linux | Windows |
| Steam Deck | Deck Playable | Deck Playable |
| Price | 19.99 USD | Free to play |
| Steam reviews | 96.1% positive (21,597 reviews) | 4 reviews |
| Multiplayer | Multi-player, Cross-Platform Multiplayer, Co-op | Single-player only |
| Developers | Tripwire Interactive | Phancy Dragon |
Side by side
- Both are Action games on Steam.
- Killing Floor (2009) is 13 years older than Monsters In The Shadows (2022).
- Monsters In The Shadows is free; Killing Floor is paid (19.99 USD).
- Killing Floor has co-op; Monsters In The Shadows does not.
- Both are Deck Playable.
Killing Floor vs Monsters In The Shadows — FAQ
- Should I play Killing Floor or Monsters In The Shadows first?
- If you want chronology, Killing Floor (2009) came out before Monsters In The Shadows (2022). 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 Monsters In The Shadows 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 Monsters In The Shadows have multiplayer like Killing Floor?
- No. Killing Floor supports multiplayer on Steam (Multi-player, Cross-Platform Multiplayer, Co-op), while Monsters In The Shadows is listed as single-player only.
- Is Monsters In The Shadows free?
- Yes — Monsters In The Shadows is a free-to-play Steam title. Killing Floor is paid (19.99 USD).