Undertale helps kids practice and improve the following skills:

Flexibility: Adapting and adjusting to changing conditions and expectations. 

Because most RPG’s require the player to do battle with enemies before progressing, Undertale requires a more flexible mindset. The player can make it through the entire game without attacking or killing a single enemy, meaning that they have to find other ways to get past these encounters without being killed themselves. For players who are not very flexible, they may find themselves only able to complete the game in the “Genocide Route,” where you attack all of the characters like a traditional RPG. If playing through the game a second time, they will have to navigate through the Underworld encountering characters who remember how you behaved previously. 

Self-Awareness: Understanding our own actions, thoughts and feelings. 

Because you can make it through the game without killing a single enemy, Undertale requires the player to use their self-awareness skills to think about the actions they take within the game. And characters will also remember your actions, so unlike most games, they will remind you of whether you were cruel or kind in your previous play-through of the game. For players who struggle with self-awareness, games like Undertale can be a good way to practice alternate methods of game interaction that do not involve fighting or killing.