Top Ten Doom Clones

There's a fascinating graph that can easily be found on Wikipedia here that studies the usage of the terms "Doom clone" and "first person shooter", looking at their respective usages in Usenet posts between 1993 and 2002. The phrase "Doom clone" looks to have been conclusively defeated by "first person shooter" by late 1998, which interestingly coincides with the release of Valve's Half-Life. But like the secretive Trystero in The Crying of Lot 49 (I'm sorry, that's the second Pynchon reference in two posts – I'll try and cut them down) the phrase was not quite defeated, but merely forced underground, along with the games that remain lumbered with the label. To be honest, the fact that mainstream magazines and the game-playing public labelled games like these as "Doom clones" was a bit unfair. The games weren't exactly carbon-copies of the massively successful id classic, many didn't even use its influential engine – it's just that the early competitors to Doom were sometimes looked down upon and have been largely forgotten today – even when some of them were brilliant in their own right. So what defines a Doom clone? Well, by my definition a Doom clone is an FPS released between 1993 and 1998, which use sprites for their characters and objects and generally have Doom-esque technology to work with. Some games on the list are still famous today – others have fallen into at least partly undeserved obscurity. Because of the relatively primitive engines they use, they can often be difficult to get working on modern operating systems – but where possible, I'll offer some advice as to how these games can be played in 2008 (remember that DOSbox will theoretically run them all). Incidentally, for those who have yet to experience the joys of Doom itself, it can be found in a Collector's Edition on (for example) Amazon, and there's a guide to getting the game to run under XP over at the excellent Doom Wiki here. For now though, on with the list – from #10 right up to #1…