ForumAren't d3 citadel 02 and ep1 citadel 02 the same map?

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I noticed while I was attempting to map out the citadel that two different games bare a striking resemblance to each other.

i.e. they are almost identical.

The maps in question are d3_citadel_02 from Half Life 2 and ep1_citadel_02 from Episode 1.

I was hoping if someone could confirm this and if there are any other common areas between games.

d3_citadel_02

http//img24.imageshack.us/img24/1742/hl2version.png
ep1_citadel_02
http//img151.imageshack.us/img151/6550/ep1version.png

Thanks.