136 of 1,643 players have completed this game (8%)

Rarest Achievements

  • Aperture Science
    Earn gold medals on all Portal challenges.
    Gamerscore 40
    Score
    10%
    Very Rare
  • Rocket Science
    Earn silver medals on all Portal challenges.
    Gamerscore 20
    Score
    11%
    Very Rare
  • Basic Science
    Earn bronze medals on all Portal challenges.
    Gamerscore 10
    Score
    11%
    Very Rare

Player Ratings

4.73
Based on 104 ratings
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