It is just different. GIMP is a general image editor. Darktable is for developing, retouching, and organizing photos. GIMP does a lot of things that Darktable doesn’t. But for processing RAW photos, adjusting light, color, contrast, removing spots, it is much easier to do with Darktable.
missed a lot of good games, like:
Freeciv
Battle for Wesnoth
all id Doom and Quake games up to Doom 3