You can play a timed demo for free at Big Fish Games or GameFools .
The game has been archived as "freeware" or for borrowing on the Internet Archive . digbys-donuts-pc-game-free-download-full-version
Digby's Donuts is a classic arcade-puzzle game where players help Digby expand his donut empire across 20 cities. It is widely available for modern Windows PCs through various digital storefronts and preservation archives. You can play a timed demo for free
While the "Full Version" is typically a paid product, you can find free trials or legal full-game downloads at the following sources: digbys-donuts-pc-game-free-download-full-version
A free web-based version is available at GameHouse or GameFools Online .
To own the permanent full version without time limits, it is sold at WildTangent Games and Zylom . Game Features & Highlights