The Divide: Enemies Within (1996)
This PS1-era Metroid tribute slipped through the cracks at its time of release, but it bravely brought much of the formula into the third dimension. Traversing an atmospheric robot factory gone haywire, you had to explore the place to build up an arsenal worthy of taking on the machines. Despite the 3D graphics, the camera would shift to 2D and isometric perspectives when required, and the world was rife with secrets for intrepid explorers. It was lonely, foreboding, and as close to capturing that ‘Samus feeling’ as any game beyond Metroid itself.