Hello Kitty Island Adventure invites gamers to immerse themselves in a world of fun and discovery, guided by some of the game's most iconic characters. The title takes you to a vast island where you'll encounter ancient puzzles, hidden treasures, and a multitude of heart-pounding quests. Each location offers a unique experience, from the ocean depths to floating islands high in the clouds. As you explore, you'll meet over 40 characters, each with their own personality and story. Getting to know these characters is a key part of the game, as building friendships unlocks new adventures and abilities.

All core HEROish gameplay takes place in 2D. That is, the player can move left and right across the screen. The battles take place in a very simplified analogy with the fights in the MOBA genre. You and the enemy have a base with a crystal. If the hero of either side dies, then he is reborn at his base, and the health of the crystal decreases. Or you can go to the base and attack this crystal. Whoever runs out of crystal health points first loses. But there is also a slightly different format of battles, when you need to fight off waves of enemies.