For my third-semester project in the Game Design programme, the university set the requirement that a 3D game had to be designed and developed. For our ideation, we tightened this constraint and looked for a mechanic that could only be realised in 3D. Initially, we also wanted to limit ourselves to mechanics that would not even work in VR.
After extensive prototyping of a mechanic that moved objects in space, based on the lack of depth perception of a 3D game on a 2D monitor, we decided to repurpose and expand on a mechanic from the game The Unfinished Swan. The first approach was intriguing, but did not promise tangible results in the time that remained.