Right-click the game icon and select "Run as Administrator" before entering the code.
Often includes the Build-A-Lot series in bundles for just a few dollars.
When you purchase Build-A-Lot 4 , the developer or distributor provides a unique (often called an Activation Code ). This key proves ownership and unlocks the full version of the game, moving you past the limited trial mode. Where to Find Your Official Key
Files disguised as keygens often contain Trojans that steal your personal data.