same game?

[wellsy84]

i might be a little slow here but is this the same game thats on the orange box with different achievements?

[The Pants Party]

Yes it is.

[wellsy84]

ok cool thanks

[d0ct0rscarecr0w]

yes and no
yes the main story is the same but there are differences

-new achievements, as you mentioned.
-14 new puzzles, not part of the story so no GLaDOS dialog.
-Leaderboards for the time trials.
-cheat codes don't work in Still Alive.