DRazor

DRazor is an arcade game about defending an energy planet from enemy orbs. You fire lasers at orbs using the cursor keys: up for orbs coming from above, down for those coming from below, and left or right for orbs moving sideways from the corresponding direction. Each difficulty has four levels, and you receive a full shield and a set of bombs on each level. Use the space bar to deploy bombs.

Firing and scoring

In Easy and Normal, you can shoot at any time. In Hard, you must wait for the cross icon to disappear from an orb before firing. Shooting an orb while its cross is showing, or firing in a direction with no orb, blocks your laser for a few seconds. It becomes available again when the window flashes blue and a “released” message sounds. On harder levels, bombs can also unlock a blocked laser.

Destroying orbs in quick succession builds combos that multiply your score. Shooting orbs near the energy planet can also earn double or a million points. From time to time, a special weapon is used to destroy the planet; when its large target icon appears, press X. In Normal and Hard, wait until the icon scales down and blinks inside the planet before pressing the key.

Play modes

The game has four Play Modes. Mode A features red orbs. Mode B adds blue orbs: use the regular keys to shoot red orbs and the second set of keys for blue ones. Mode C includes red, green and blue orbs; the secondary set of keys selects the colour you can target, and the HUD changes to show it. The description does not specify what Mode D contains.