Board Thread:Questions and Answers/@comment-29579350-20181007151751/@comment-26046325-20181027062104

Last time I checked, Undertale was only $9.99. That isn't very expensive for my standards.

But if you don't have the money for Undertale and want to keep playing the pirated version, you could just keep reseting the game to reset the FUN values so that you can encounter something different, though that can be extremely cumbersome.