[Feature]
● Stage
- Stages of 2 different modes.
- Survival and defense!
    ○ Survival
    - A stage where you have to eliminate a certain number of creatures. 
    - You have to dodge creature attacks and hit back to clear the stage.
    ○ Defense
    - You have to defend your base for the given time.
    - The only thing left for you if you cannot defend the base is death!
● Weapons
- You get weapons, traps, hps for killing the red monsters.
    ○ Machine gun : Rapid fire, endless ammo!
    ○ Shotgun : A wide range of attack.
    ○ Rocket launcher : A strong damage to many enemies.
    ○ Railgun : Hits enemies in a line very quickly.
 
● Traps & Etc
    - Machine gun trap : Helps players.
    - UFO : Slows down creatures.
    - Health potion : Increase HP.
 
[How to play]
- Move : Drag the left bottom.
- Dodge (Roll) : Double-tap the left bottom.
- Attack : Drag the right bottom. (Attacks automatically if enemies spotted.)
- Change weapons : Tap the weapon Icons
- Set traps : Tap the trap icons