This is a pack of four maps from the older build of the Air Exchange recreation by Витой.

airex_start_old is an older version of the Airex start map that can be found within the visgroups of airex_0102.vmf.

airex_start_concept - a hidden vis group named "no man's land" from the airex_start.vmf. This section was used to make a screenshot that was used for one of chapter's concept arts.

airex_01_old is an older version of the airex_01 map that was restored to look more like the version on the envmap. Interiors from the hidden visgroups on airex_0102 were added and fixed.

airex_02_old is a modified version of the airex_02 map with interiors and a tank tunnel added from the hidden visgroups on airex_0102.vmf.

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