I admit I read the script source first before playing the map. That in and of itself got me excited since I knew this was going to be a rather heated map (pardon my terrible pun)
First thing that jumped out was the map's sheer size. I was initially expecting lava to come bursting forth from every other wall but it was not to be.
The crystals scattered all over the place really did not make much sense to me, other than making you suspicious of those squares being triggers for the wall collapses or a monster onslaught.
At first, I played things pretty safely and only drilled walls I knew wouldn't potentially open up a lava filled chamber. I built a Geological Center almost immediately and trained all my Raiders as Geologists for obvious reasons. Then I started to slowly work my way around, carefully strip-mining things as I went.
By the time I wound up opening the chamber I pretty much had lined up everybody where they needed to be. Only lost all of my vehicles because of the AI, but I had salvaged enough crystals to finish presumably.
Unfortunately, the game decided to abruptly force close when I was drilling some of the final caves; dunno what that was all about.
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Now for the review:
What surprised me the most is that the game did not flip out about the RRU you hid in the map (nice easter egg by the way), nor did it seem to have the typical problems it has on large maps.
I was also surprised that the map was largely compatible with my mod for the most part, so that was a bonus.
When in comes to the actual map itself, I think you did a fantastic job. It felt like a real cave, and actually had a story behind it.
It did feel a bit overly large, but that might be me. The cavern layout kept me on my toes and wary of opening new chambers, that is for sure.
Had a blast playing through the level; definitely worth taking the time to try out (to those who read this).
Extra points for making it easy to implement, and for making your own level bmps once again.
Little details like this are fantastic to see. Excellent job on a very well designed (and nicely scripted) map @alan!