Particle Hearts pulls players into a whimsical adventure where you play as a tiny spark navigating a world made of glowing particles and floating islands. Developed by Underwater Fire and published by First Break Labs in 2025, this adventure puzzle casual RPG game lets you connect energy orbs to light paths, solve shape-shifting riddles, and befriend quirky spirit companions. You drift through cloudy realms and crystal caves, collecting heart shards to restore the world's balance. The latest version of the game adds new companion abilities and smoother particle effects, great for fans of gentle exploration.