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normal Half Life 2 game makes me motion sick after five minutes, I think Portal would do horrible things to my stomach.


That's fairly likely, then, because there's some extremely freaky physics going on in some of the levels.

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Is it as good as it looks?


I'm not sure. I enjoyed it, and I think I'll play it through again, but...

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I hear it's a fairly short playtime.


...it didn't take that long to finish. I played it for about three hours on Thursday, and probably a couple more hours over the weekend, and finished the last bit in about 20 minutes this evening.

It's got some bonus game modes that I'll be investigating at some point.

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Are there any particularly insane puzzles?


They get more insane as you go on, and they're all pretty good.

Spoiler:
Gurer'f bar jurer va beqre gb whzc npebff n irel jvqr ubevmbagny tnc, lbh unir gb chg n ubyr va gur prvyvat naq va gur sybbe, naq ybbc guebhtu n pbhcyr bs gvzrf gb ohvyq hc rabhtu irybpvgl, naq gura cynpr na rkvg va gur jnyy, nf lbh tb cnfg, va beqre gb syvat lbhefrys npebff gur tnc.
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-- roger