The definitive version of Resident Evil 1, with gameplay mechanics lifted from future games, like quick-turning, reloading without having to empty the clip and your knife being it's own dedicated button which are nice additions alongside that, there's better models, skippable cutscenes, including doors and 60fps which lead to smoother play and animations.

The biggest selling point is the new "Rebirth" mode, which adds quite a number of changes to the core gameplay making it more action-oriented, the most major of which is the increased enemy count and variety alongside new puzzles which utilize the NDS' functions.

I'd highly recommend playing this version of RE, whether you're a newcomer to RE1 or a veteran wanting to replay it.