Time.time

static var time : float

Description

The time this frame has started (Read Only). This is the time in seconds since the start of the game.

When called from inside MonoBehaviour's FixedUpdate, returns fixedTime property.

JavaScript
    // Instantiates a projectile off every 0.5 seconds,
// if the Fire1 button (default is ctrl) is pressed.
var projectile : GameObject;
var fireRate = 0.5;
private var nextFire = 0.0;
function Update () {
if (Input.GetButton ("Fire1") && Time.time > nextFire) {
nextFire = Time.time + fireRate;
var clone = Instantiate (projectile, transform.position, transform.rotation);
}
}