Portal | Underground story This Portal story is based on the MTN Portal Story | Part One! This mappack includes around 75 levels. in this mappack have Project One, Project twO and a Training room for Project twO.

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Intelligent puzzles, nice story and some interesting new mechanics. I liked the idea to be able to smash some of the windows with chairs, etc.

Keep up the good work! I can only recommend this mod!

3

Simplistic and uninspired level design, misaligned textures, lack of custom voice files and an overall boring experience make Portal: Underground Story one of the worst mods for this game.

Fun gameplay and ideas for the puzzles, keeps me interested even when I'm bored. A lot of glitches though, but it doesn't matter.

4

nan0kub says

8

Tildch says

8

mtz says

9

stampp says

10

mentat0 says

10

loudonlune says

10

LucasSM13 says

Community Rating

Average

8.1

42 votes submitted.

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