Plain energy is the main resource for guiding a rainbow friend. You draw paths carefully because every save matters. Hearts are tricky to get and paths can sometimes fail. It is simple but not easy.
You use mouse or finger to draw, guiding the rainbow friend through tricky physics.
You use mouse or finger to draw. Physics can be wonky and paths may warp or glitch.
You must be careful drawing. Energy runs out fast, so drawing only what you need matters.
Most of the time you draw only what you need because energy runs out fast. Being careful is better then guessing wildly.
Q: What controls are used? A: Mouse or finger drawing is used.
Q: What is the objective? A: Guide a rainbow friend by drawing paths.
Q: Is there a timer? A: Not stated.
Q: What is the main mechanic? A: Drawing paths with limited energy.