MapleStory

The heroes of these animations based on games have a similar goal to save the world. Each main lead has his unique girl sidekick that remains with the lead but has to charm other characters to join the quest. The heroism of the male leads, Hero and Al, is remarkably the same even though Hero exudes more maturity since he is older. Al does grow into his role to be like Hero, by learning responsibility. 

-Both are from MMORPG -Both are an online game. -Both have different kind of jobs [warrior(spear man/sword man), magician(priest/cleric/ice/fire mage),bowman(ranger/crossbow),thief(assassin/bandit)] -Both story are about their world been threaten. -Both story require to kill the bad guy/monsters ( slime,mushroom..) -Both contain very cute characters. -Both let you experience how fun the games actually are. -Both are about their adventure. -Both story show you their job's skills. 

-Both includes war between people -Give out same feeling  

Both involves a human main character surrounded by animal/monsters. Both are adorably animated. They both have a simple childish plotline. 

Very childish, pretty the same protogonist, and the colors, ooh, the colors. 

They both are animes which based on video games and have monsters which related to children and also they both are rated to children.