CyberMage: Darklight Awakening

CyberMage is a 3D first-person shooter set in a dark futuristic environment. Controls can be customized to allow mouse- or keyboard-based gameplay. Jumping, looking up and down (keyboard only), and rudimentary interaction with objects (e.g. switches) are available. The hero is able to use various weapons as well as his Darklight powers against many foes. These offensive, ranged powers deplete a special energy called "Mann-Ra", which regenerates itself over time. (mobygames.com)