Both work well with games. ME has many more updated drivers that will reduce time to get it up and running. Has many features that are to many unecessary. I like ME now that I have been using it for a while. 98SE crashed a lot more with my current system. If you are currently using 98SE and things are runniing smoothly, I would suggest sticking with 98SE. If you are having problems with 98SE, try ME. Remember you can always revert back to an old OS. Don't be afraid to experiment. I doubt there is anyone who writes in these forums who hasnt tried something new that they thought would make their system better, only to find that the new program fried the computer so badly that the only solution was to reformat their entire hard drive.