Definitely remembered most of these games when I was younger.
From The Lost Media Wiki
These were commonly preinstalled by several PC manufacturers including HP, Dell, Toshiba, Gateway, Samsung, Acer and Sony VAIO, and any of their subsidiaries.
Try buying & checking many older computers manufactured around the late-1990s to late-2000s to find some or any of the lost games, in the forms of PC recovery CD-ROMs or DVD-ROMs depending on the manufacturer, the Factory Reset Partition of some secondary recovery Hard Drives used by these PCs depending on the manufacturer, among other methods.
I'm not sure if any WildTangent games were bundled with any PC gaming or software magazine coverdiscs during the 2000s in the form of a demo, though.