An awesome EntityPlus release from Eraser, author of the mod. You will be required to have at least EntityPlus 1.1.9 to play this release. In case you have no idea what EntityPlus is, it is Single Player game play (think original Quake) within Quake 3 Arena.
This release shows just how far the mod has matured over the last few years. The respawn process, Single Player features and many other tweaks show that EntityPlus could be way more popular than it currently is.
As to The Dimension of Evil, it is a thoroughly enjoyable release. You are tasked with escaping an evil by locating a series of keys to progress further. There are secrets and surprises along the way to freedom. Keeping this review spoiler free is hard to do. There are some back-tracking moments and you may become a little lost at a few points. The architecture is a little basic by many of today's releases, but do not let any of this put you off!
After playing this Single Player release a few times now, I can only recommend everyone download it, play it, and let Eraser know what you think in the comments. For the mappers out there, give EntityPlus a go. It would be amazing to see what others come up with as well.