Extracted these from the PS3 theme files a couple of years ago as apparently those almost became a lost media or something, with HD versions of these renders being "literally no where to be found on the internet". Seeing as I'm still getting hits on that tweet to this day, thought I should probably mirror here too for better searchability

Even though Cohost doesn't recompress images, for long(er) term preservation I uploaded those and original SD (640x480) versions that came with the HD versions above to archive.org, so
Download all at once here
Image 1: "Poker Night 2 - You Crack Me Up, Little Robot Premium Theme" (crossover: Sam & Max x Borderlands)
Image 2: "Poker Night 2 - Army of Brockness Premium Theme" (crossovers: Evil Dead (Army of Darkness specifically, background) x The Venture Bros. (Brock Samson) x Borderlands (Mad Moxxi))
Image 3: "Poker Night 2 - I'm the One with the Guns Premium Theme" (Evil Dead (Ash Williams) x Borderlands)
Image 4: "Poker Night 2 - Freelance Portal Premium Theme" (Portal 2 x Sam & Max)
Image 5: "Poker Night 2 - First Date Premium Theme" (Portal 2 (GLaDOS) x Borderlands (Claptrap))