A legendary name among CRPG fans, Darklands is unique, offering a historically-focused world instead of a fantastically-focused one, as well as a mechanically rich gameplay experience based on an entirely original ruleset. Complex. Deep. Unmatched.
One of the finest tactical squad-based sims ever. Easily as good as the (real) Rainbow Six titles and I prefer it ever-so-slightly to the oft-lauded and also excellent SWAT 4, since they are virtually identical mechanically and the TGOTY edition has more missions. I own 2 physical copies already, but I'm buying again.