Nice.. I'm all for this being converted, but I just can't imagine what the levels must be like given how inferior this console hardware was even way back in the day. Do you know if the pack was originally destined to be “PSX link cable” compatible? If not, is adding multiplayer coop support providing a faithful conversion?
They planned a multiplayer but it wasn't added back in this stage. You see the project originally started during Unreal developement, back then handed by DMA, but they decided PSX was too slow for it and they went with N64 only back then(which was cancelled anyway). Then later on the project was resurrected by pterodactyl in early 99 (which is this content) and then even sheduled for a complete makeover which never took place afaik.
The maps aren't that bad, there were limits of max visible polys in one area though and stuff like that and they had to sometimes change to less poly stuff, in order to run it well on the PSX hardware. Of course the maps are separated into multiple parts, there was even HUB system attempted in one of the early versions, but of course Unreal doesn't support HUB very well so it was dropped and made more linear, but still with lots of secrets and sideway paths, so don't except Unreal2 too excesive linearity aka Janus at times either (which was really ridiculous decision in the final stages of its developement).
The textures were all in very low res and without detail texturing or special filtering, and the texture dimensions and colors were trimmed down, in fact one could convert those textures to doom WAD and get away with it right away i believe, without resizing anything or recoloring. Those low res tetxures get extra blurry and sometimes weird on hardware support though.
I am adding full coop support for the maps, the coop support was not good in original, in fact coop was dropped altogether.