Most of Robbie Swifthand and the Orb of Mysteries is a series of puzzles where you try to collect orbs and use them to open doors to advance. To do so, you'll have to collect orbs from the ground or altars and throw them against the vortexes that open doors.
But it's not as easy as it sounds. You'll encounter dangerous obstacles like things falling from the ceiling, spikes coming out of the ground, and swinging axes that can cut you in half.
Robbie Swifthand and the Orb of Mysteries is a simple 2D platformer with elements typical of the genre. Overall, a solid game with quite good graphics.