- If it is an old enough game and is very inconvenient to obtain a real copy.
- To see how well the game runs on your PC before you purchase it or to test the game to see if you want to purchase it, and there is no demo.
- If the game is broken or buggy and the pirated copy performs better.
- If the game has shitty DRM, and the pirated copy performs better.
- If the game has a low supply and you cannot find a copy.