The release of Doom 3 BFG brought back memories of ports/remakes where the original was better in execution AND quality than the "remastered" version. Would be interested in getting first hand experiences of a port or remake that was not only bad, it actually could not even match the quality of the original material which was released on inferior hardware.
For me, the ultimate bad port has to be: Metal Gear Solid for the PC
What a terrible, terrible port! The Psycho Mantis scene, the standard bad port tropes (limited config options, bad conrtols etc.) wre bad enough. The most offensive aspect of the port though was the fact that the atmospheric post-processing effects in the original Playstation version that were vital to the storytelling and vision of the game's designer were completely stripped out! I remember reading an interview where the developers justified simply not putting the effort because they were "targetting a wider audience of PC gamers".
There are many ports that are just as bad, but messing up one of the only two modern Metal Gears released on the PC is unforgivable. As a result, the MGS port is officially the worst PC port ever created in my books.
Anyway, share your opinions.