Portal: Lost in Aperture

Portal

Base game

Portal 2

92%

Portal

83%

BioShock

90%

Half-Life

84%

Inside

89%

Dead Space

87%

BioShock 2

84%

Super Metroid

96%

Deus Ex: Human Revolution

88%

Mirror's Edge

75%

Metroid Prime

93%

Prey

78%