Halo

Play Halo and compete in this multiplayer-based first person shooter against fearsome opponents straight from your Mac OS X Dashboard.
Made proudly with the free Unity3D engine.
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WASD to move.
Space to jump.
Q to shift weapons.
E(hold) pick up weapons
Left Mouse Button to shoot.
Right Mouse Button to zoom.
C/scroll wheel to melee.
Caps Lock to throw grenade.
Tab to switch grenade type.
Control to Crouch.
ESC opens the menu.
P displays scoreboard.
Mouse to look around.