The features in this Asteroids Game:

Control Of the Game:

a). press "WASD" keys to move and diagonal moves

b). press "→←↑↓" keys to fire and diagonal firing

Team of FRIEND: Falcon: use "WASD" to move: left(A), right(D), up(W), down(S);

    can increase lives with eating a blue FLOATER (NewShipFloater);
    
    the remaining time(Meter) of a NewShipFloater shown on the left upper screen with blue color;

Team of DEBRIS:

Debris(Gray): if Foe killed, gray Debris.

Team of FLOATER:

NewShipFloater(Blue): get a new live of Falcon

Goodie(Yellow): get fire power up(expires in 200 ticks). Fire changes from Bullet to Cruise and Cruise will reflect will it . touches the edges of the screen

Goodie(Green): get a shield(will expires in 100 ticks).

Bomb(Red): Bomb when falcon collides with it, all asteroid will be killed

Two situation for generating a floater:

a). When a big asteroid is killed, there is 50% chance to get a new floater

b). During some time interval, a new floater will randomly put

Score and level:

Score: the current score and level will be shown on the left-top corner.

Level-up rule: Level will add one every time user earns 10000 points.