Solid idle game with lots to manage. There's always a new things that the game lets you do as you make progress, with flavorful bits of narrative text to introduce them! The web window version of the menus need to have vertical navigation of some sort.
I liked the dynamic world with the moving kobolds. The randomized colors felt a bit too broadly spread, I think there could be more rules for which can be used where. A mellow music track is often a good match for idle games, the sound effects felt a bit too prominent without it.
The game stays faithful to everything it sets out to be, and does a good job of keeping the players engaged in expanding both the dragon's lair and it's primary occupant.