Neither, a game shouldn't feel like it's easy or hard. If a game is made right, these concepts shouldn't matter. Need an example, would you classify Tetris as an easy game or a hard game? What about MYST? What's easy or hard to you may not be to someone else. I also find it frustrating when it feels like things are added to artificially make the game more difficult, like enemies getting one hit kills (especially in JRPGs).
I finally built a working time machine! It's not perfect yet though, it only moves forward in time and it's a bit slow. You have to be in it for one second for every second you want to go into the future.