The reason could be that the art style and music combined in the cartoon scale create a powerful emotional impact. Or it could be that it addresses universal themes of love, loss, or friendship in a very touching way.
Maybe it's something very precious or has a special meaning, and stepping on it causes emotional distress.
One cartoon that can make you cry is 'Grave of the Fireflies'. It tells a very touching story of siblings struggling to survive during war, showing their love and hardships.
The Rimworld comic might have made you cry because it depicted situations that you could relate to and felt empathetic towards. Also, the way the story was crafted and the themes explored could have brought out those tearful emotions.
Maybe Archie said or did something hurtful to Betty without realizing it.
Maybe he lost his favorite toy or got into a fight with a friend.
Maybe she's sad because she lost something important to her.
She might be crying because of a scary experience or because someone was mean to her. Different situations in the cartoon could cause her to shed those tears.
Maybe she's sad because she lost something important.
Maybe he lost something precious or got hurt.
Maybe the baby is scared or hungry. Those are common reasons for babies to cry, even in cartoons.