Players can collect, customize, or craft letters for Duo Duo to send to their love interest. These letters could be personalized with stickers or phrases unlocked through gameplay [1].
Narrative-driven decisions where the player chooses how Duo Duo reacts to situations, branching the story and affecting the overall romance storyline [4].
Players can decorate or unlock special locations for Duo Duo’s dates, adding a personalized, cozy element to the romance storyline [5]. g., puzzle, visual novel, simulation)? Suggest features aimed at increasing player retention ? Focus on social/multiplayer aspects?