Getting BeamNG on a new computer

Hello, I bought this game in 2013 from a computer I don't have anymore. I was thinking today about BeamNG and how it'd be fun to play again. Unfortunately, I feel like an idiot since I can't find a download link on this website that doesn't cost me money. Am I just missing something obvious, or would I have to pay again for it? As a notice, when I initially got it I got it through the website, not through Steam.

Thanks for any help in advance!
Ben