Heart Star

Heart Star is a co-op puzzle where you control two characters at once, one on each side of the screen, and the goal on every level is simple: get them standing in the same spot so they can move on together. You'll flip switches, push blocks, and time jumps so both halves of the puzzle line up, which means solving for two solutions simultaneously rather than one. The early levels ease you in gently, but by the middle stretch you're juggling both characters' movements in your head at the same time. It has a soft, sweet look that fits the theme without getting saccharine.