Monsters are indicated in yellow on the radar. Be alert because some monsters will strike you first.
The mouse cursor will change from blue to red when placed on a monster. When that happens, click the left mouse button to target the monster. (The monster’s status window will appear on top of the game screen.)
While targeting the monster, you can attack it by clicking the left mouse button, hitting the space bar, or using other attack skills/forces.
Players of different races are indicated on the radar in colors shown below.
Place the mouse cursor on top of other races to see the cursor change from blue to red. The targeting interface with information on name and race will appear on the top of the screen when clicking the left mouse button in that state.
Click the left mouse button or hit the space bar or use other offensive skills/forces while targeting a different race to attack. However, you cannot attack in some safe zones such as towns.
To PK with the same race, you must purchase and drink the chaos potion (charger) sold by the hero NPC of each race and it will take effect for 600 seconds. To disable and return to normal mode before the 600 seconds, you may drink the chaos cure potion (charger).