Choose Left 4 Dead
Choose Left 4 Dead if you want the Includes Source SDK, Color Alternatives, and Surround Sound side of the pairing. On Steam, it carries the stronger Steam consensus at 95.5% positive across 19,617 reviews.
Left 4 Dead vs Contagion
Left 4 Dead and Contagion 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. Left 4 Dead (2008) is 5 years older than Contagion (2013). Left 4 Dead scores higher on Steam reviews (95.5% positive) than Contagion (73.2% positive). 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 Contagion
Choose Contagion if you want an Indie and Adventure game with Online PvP, Online Co-op, and PvP. On Steam, it's currently about 60% cheaper on the Steam Store. 5,535 Steam reviews back the pick.
Both Left 4 Dead and Contagion sit in Action on Steam and both list Multi-player, Steam Leaderboards, and Camera Comfort, 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
 Left 4 Dead |  Contagion | |
|---|---|---|
| Released | 2008 | 2013 |
| Genres | Action | Action, Indie, Adventure |
| Platforms | Windows | Windows |
| Steam Deck | Deck Playable | Deck Verified |
| Price | 9.99 USD | 3.99 USD |
| Steam reviews | 95.5% positive (19,617 reviews) | 73.2% positive (5,535 reviews) |
| Multiplayer | Multi-player, Co-op | Multi-player, Online Co-op, Co-op |
| Developers | Valve | Monochrome, Inc |
Side by side
- Both are Action games on Steam.
- Left 4 Dead (2008) is 5 years older than Contagion (2013).
- Left 4 Dead scores higher on Steam reviews (95.5% positive) than Contagion (73.2% positive).
- Contagion is currently ~60% cheaper on Steam than Left 4 Dead (3.99 USD vs. 9.99 USD).
- Both support cooperative play.
- Steam Deck: Left 4 Dead is Deck Playable, Contagion is Deck Verified.
Left 4 Dead vs Contagion — FAQ
- Which is better, Left 4 Dead or Contagion?
- On Steam reviews Left 4 Dead scores higher (95.5% positive) than Contagion (73.2% positive). Both have enough reviews to trust the signal, so for players using reviews alone, Left 4 Dead is the safer pick. Genre fit still matters — check the side-by-side table for the categories each game lands in.
- Should I play Left 4 Dead or Contagion first?
- If you want chronology, Left 4 Dead (2008) came out before Contagion (2013). 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 Left 4 Dead and Contagion 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.
- Do both Left 4 Dead and Contagion have co-op?
- Yes — both list a co-op category on Steam. Specifics differ: Left 4 Dead ships Co-op; Contagion ships Online Co-op, Co-op.