I've not completed the remake yet, but I've explored a lot and here is my impression so far. This will not touch on all the differences by far, of which there are far more than I expected. This is truly a remake and rearrangement, much more than a graphical update.
Both games are good for the jaded gamer who has seen it all. Which one I recommend depends on how jaded you are. More jaded = original might be better.
Combat seems toned up a little in the remake, while the original focuses more on the puzzles. The remake is overall a lot more convenient to play, better controls and much more self-explanatory. Most people would probably like the remake more, as it feels more straightforward both in how it controls and how it kills you.
The things I dislike most about the original:
Up = jump, which makes wall-jumping very hard to do. The remake has up and jump separate, thank goodness.
Managing the collectible roms/programs and figuring out what they do is tedious and ugh there are so many. The remake massively reworked this.
The things I dislike most about the remake so far (have not beaten it yet):
Grinding for money and sub weapon ammo is horrible and takes ages. In the original I often used shurikens and other limited use weapons, in the remake I try to avoid it and fear even using stuff accidentally.
Bosses are even harder so far. Personally I dislike very hard bosses, I'd much rather be stuck on a level or trap.
--Edit--
I mostly retract my statements about the bosses and grinding. While the bosses are mostly harder and might be frustrating for some, the one I hated has been toned down. Thus overall the difficulty of the bosses so far is much more balanced than in the original.
If you only want to play one, then I highly recommend the remake over the original unless you are super jaded as a gamer. Just be careful not to waste too much money in the remake.
--End Edit--
Which of the following appeals to you more?
Original: You cannot save until you've explored the dungeon and collected money to buy some items needed for it. It might be hard for you to figure this stuff out, but makes even saving at the beginning feel like an accomplishment. Even after that there is only one place you can save, and it'll be a while before you are able to use more than the first save slot.
Remake: You can save right at the beginning, and even in some places within the dungeon. You get multiple pages of save slots.
Post edited October 09, 2012 by Sfon