So I dug out an old game engine called Genesis3D engine that I had used a few years back for fun.

I realized that a few files were missing, so I went to go download it again.

I noticed there was a license, but it said

Created by Eclipse Entertainment between 1996 and 1999 and later acquired by WildTangent in the year 2000, Genesis3D was one of the first open-source rendering engines and served the interest of a large base of aspiring game developers, many of which became professional game developers and still serve in the industry today.

While no longer viable on today's modern hardware the engine lives on as a historical artifact as we look to turn the page to a new chapter in modern graphics engine development. If you care to develop with Genesis3D 1.1, you may do so, free of licensing obligations as the engine is abandonware and the stakeholders are long gone.

Does this give me legal grounds to use it to make a commercial game without actually purchasing a license to the engine?

Thanks in advance for the replies!