Portal > General Discussions > Topic Details
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SillyWalk Aug 3 @ 5:30am 
Narbacular Drop. Same concept as Portal's portals.

Originally posted by Wikipedia:
Valve Corporation, developers of the Half-Life series, discovered Narbacular Drop after its release and hired the entire development team to work for them. The team developed Portal, that shares some things with Narbacular Drop's concept.

Tag: The Power of Paint. Same concept as Portal 2's gels.

Originally posted by Wikipedia:
These gels were created by the team from the Independent Games Festival-winning DigiPen student project Tag: The Power of Paint.

And both of them are free.
[SKM]Paul the Bassist` Aug 5 @ 3:51pm 
I see that Conversion is on this list. If i remember correctly, Conversion is free on steam, but you need to buy Portal 2 to use it.

Still works on the list though.
flDevicΣ Aug 6 @ 4:31am 
portal prelude
SillyWalk Aug 8 @ 6:37am 
I just remember about Whitewash. It isn't on Steam yet, but it's already greenlighted.
http://steamcommunity.com/sharedfiles/filedetails/?id=238382054

And Twin Sector
http://store.steampowered.com/app/27900/
Last edited by SillyWalk; Aug 8 @ 6:38am
Pareletry Aug 8 @ 6:50am 
Last edited by Pareletry; Aug 8 @ 6:51am
SillyWalk Aug 8 @ 7:07am 
Originally posted by Pareletry:
Check out Q.U.B.E. on Steam. The link is broken so just search for it.

They don't sell the original version anymore, but the director's cut edition works.
http://store.steampowered.com/app/239430/
Last edited by SillyWalk; Aug 8 @ 7:07am
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