The superior version of HL:DM is the source version cause because of the updated engine you can run dm mapa from hl2 dm and make better dm maps with less limitation. The only bad thing is that crossfire doesn't have working connons that's an L. But it do have a new secret room tho.
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My english in this post sucks damn
It would be superior, since maps are more detailed. But since valve abandon it. It exist just for gmod content