Buy Portal
According to COST.games Portal can be purchased at Steam for CA$12.99.
The lowest price ever for Portal is CA$1.29.
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Portal review
COST.games gives Portal a score of 92.
The average score based on 27 critics reviews on Metacritic is 90 points.
5,201 users of Metacritic gave Portal an average score of 8.8.
On Steam, 98% of the 149,770 players gave a positive rating.