I strongly disagree. N Game has terrible graphics and has boring level design... To tell you the truth, this is VERY similar to N Game but it's got great graphics, more quests, more unlockables and WAY stronger level design.
I think N is fun but it's only fun if you play a few levels. There's too much collecting in N. I'm a platformer run to end of level kind of guy. Maybe that's why I find N Game tedious.