Our colleagues at Digital Foundry tackle the original the 1993 original Doom, and then proceed to analyze each and every version of the game that's been ported, converted, and released since then. It's a very deep dive into one of the most revered video game series of all time, and the video provides and interesting look at how the porting practices of today were spearheaded back in the 90s by the industry's obsession to get Doom on every playable console.
The original Doom's been ported for everything, from the latest consoles to the iPod. But in an effort to bring the game to the latest and greatest Digital Foundry found that some aspects of the game were improved based on the new technology, while other aspects were cut due to size limitations. If this sounds familiar, that's because this is largely the guiding philosophy of modern day ports, to innovate where possible while working around any potential roadblocks of a new port.
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The whole video clocks in at little under an hour, but if you're interested in knowing about all the Doom ports released since 1993, then DF has you covered.