Choose Outbreak
Choose Outbreak if you want the Online Co-op side of the pairing. Outbreak launched in 2017.
Outbreak vs Outbreak: Endless Nightmares
Outbreak and Outbreak: Endless Nightmares both land in Action, Indie, Adventure 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 share Action, Indie, Adventure on Steam. Outbreak (2017) is 4 years older than Outbreak: Endless Nightmares (2021). Outbreak scores higher on Steam reviews (64.9% positive) than Outbreak: Endless Nightmares (50% 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 Outbreak: Endless Nightmares
Choose Outbreak: Endless Nightmares if it's currently about 70% cheaper on the Steam Store. Outbreak: Endless Nightmares launched in 2021.
Both Outbreak and Outbreak: Endless Nightmares sit in Action, Indie, and Adventure on Steam and both list Multi-player, Shared/Split Screen, and Shared/Split Screen Co-op, 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
 Outbreak |  Outbreak: Endless Nightmares | |
|---|---|---|
| Released | 2017 | 2021 |
| Genres | Action, Indie, Adventure, RPG | Action, Indie, Adventure, RPG |
| Platforms | Windows, Linux | Windows, Linux |
| Steam Deck | Deck Playable | Unrated |
| Price | 9.99 USD | 2.99 USD |
| Steam reviews | 64.9% positive (77 reviews) | 50% positive (24 reviews) |
| Multiplayer | Multi-player, Online Co-op, Shared/Split Screen Co-op | Multi-player, Shared/Split Screen Co-op, Co-op |
| Developers | Dead Drop Studios LLC | Dead Drop Studios LLC |
Side by side
- Both share Action, Indie, Adventure on Steam.
- Outbreak (2017) is 4 years older than Outbreak: Endless Nightmares (2021).
- Outbreak scores higher on Steam reviews (64.9% positive) than Outbreak: Endless Nightmares (50% positive).
- Outbreak: Endless Nightmares is currently ~70% cheaper on Steam than Outbreak (2.99 USD vs. 9.99 USD).
- Both support cooperative play.
- Outbreak is Deck Playable on Steam Deck; Outbreak: Endless Nightmares has no Deck rating yet.
Outbreak vs Outbreak: Endless Nightmares — FAQ
- Should I play Outbreak or Outbreak: Endless Nightmares first?
- If you want chronology, Outbreak (2017) came out before Outbreak: Endless Nightmares (2021). 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 Outbreak and Outbreak: Endless Nightmares similar?
- They overlap on Action, Indie, Adventure 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 Outbreak and Outbreak: Endless Nightmares have co-op?
- Yes — both list a co-op category on Steam. Specifics differ: Outbreak ships Online Co-op, Shared/Split Screen Co-op; Outbreak: Endless Nightmares ships Shared/Split Screen Co-op, Co-op.
- Does Outbreak run on Steam Deck?
- Yes — Outbreak is rated Deck Playable by Valve. Outbreak: Endless Nightmares doesn't have a Deck rating yet, so its Deck behaviour is currently unverified.