Two large abstract base levels, "a lengthy journey through a non-linear H.R. Giger-themed flooded scrapyard". The map sources are included.

Note: These maps require an engine port with increased limits and expanded map boundaries. Currently, only RMQ (included) and Quakespasm (version 0.92.0 or later; set "sv_protocol" to "999") are capable of running them.

The maps can only be played on either Easy or Hard skill setting.