Board Thread:Questions and Answers/@comment-27747457-20160206201505/@comment-27524978-20160207022936

Definitely buy it. It's only $10 and even better, there's a Lunar New Year sale on Steam that lasts until Febuary 12th. So for now it's $8. (There's also the soundtrack you can download which is also $8 during the sale.)

Although it's one of the funner games to play if you don't know what's going to happen. I'll admit, I got spoiled a bit too before I got it, (and was even more spoiled about plot points like Flowey's true identity after getting past Undyne for the first time in the neutral route.) but you might find some new things hiding in Undertale. After all, the game's crawling with secrets.

And there's no true way to know if it's difficult until you've played it for yourself. Just stay determined!