Left 4 Invasion: Outer Space!

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  • 10 Chapters
  • 5 Multiple Endings
  • Unusual Secrets
  • Valves Official Chapters
  • Friends or Solo-able

Tagged

  • bradmyers
    bradmyers

    Posted this review

    5

    A lot of endings, total chaos

    The good endings are hard to get, probably 99% of players get the bad ending. Which means the campaign forces them to lose. Who wants that? Only losers enjoy losing. This, plus the exagerrated difficulty sometimes, and the copy-pasted pieces of original maps make this a pretty bad campaign.

    Edited: July 2025

Audio Available

Developers & Credits

  • Sir Jay

    Scripting

  • NeoLin

    UFO's

  • Tsumugi Shirogane

    Earth Model

  • Valve

    Original Chapters

  • iamDeanPC

    Developer

File Details

l4invasion.zip

(300.6 MB)

View Changelog

Version 5.5 Final

iamDeanPC : Trending

No Mercy: Christmas Edition (Part 2)
  1. No Mercy: Christmas Edition (Part 2)
  2. Left 4 Invasion: Outer Space!
  3. Dead Center: Halloween Edition
  4. Dark Carnival: Ghostbusters! (Halloween)
  5. Source 2: Plantation Survival
  6. Dead Center: Christmas Edition (Part 1)

maps : Trending

Lingshan-Guangxi V 3.1
  1. Lingshan-Guangxi V 3.1
  2. 异度神召威力加强版(Divine Cybermancy PK)
  3. NIGHTMARE HOUSE 2 UNOFFICIAL PORT
  4. Heaven Can Wait 2
  5. NanningCity / 广西 南宁
  6. Deathcraft II
  7. Lima Infection Legacy
  8. Early Days (optimized/fixed)
  9. Secret of the Complex Moundsville Prison (L4D1 Port)
  10. Glubtastic 5

maps : New & Popular

异度神召威力加强版(Divine Cybermancy PK)
  1. 异度神召威力加强版(Divine Cybermancy PK)
  2. Lima Infection Legacy
  3. Heaven Can Wait 2
  4. Amid The Ruins
  5. NanningCity / 广西 南宁
  6. Early Days (optimized/fixed)
  7. Anemoia - (backrooms)
  8. 半条命:逃脱(Half-Life: Escape)
  9. Silent Hill: Otherside of Life - Fixed
  10. Red Square (Beta)

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