Collect the 4 Golden Artifacts with your trusty grapple-hook!
In Idol Threat's project class we were given a base 2.5D platformer toolkit for Unity3D which gave us some basic movement mechanics and an approximate idea for world and player scales. Otherwise we were given full creative freedom as long as we maintained the game as a 2.5D platformer.
We wanted to experiment with more depthful movement mechanics since the initial kit was not enjoyable to play for any significant amounts of time; looking at games like Grow Home, Ori and the Blind Forest, or even Quake there tends to be more success in games where even the simplest gameplay experiences are innately engaging instead of just a press of a button to go left or right.
Our end result was a grapple hook mechanic that lets the player swing over level hazards, up and down perilous caverns and upside-down underwater as you fight your buoyancy and swing underneath tiki-themed booby traps.