Guild Wars 2

Run across the exact same mobs 1 will have no bonus then 2 will have then none on the next 3 then bonus on a different mob.

It seems random, maybe some can explain it?

Killing a mob that hasn’t been killed for a long time, mobs at hard to reach places qualify for this, gives extra experience

You can see this experience as “Exporation bonus: <amount>” under the normal Experience reward message

I seem to remember reading it is if a given mob hasn’t been killed for a while, then it gives a bonus (I honestly don’t know what the timer is mind you or if it’s correct I’m sure I read it somewhere).

I too had a similar idea that the longer the mob hasn’t been killed the more xp but recently, I killed a moa and got bonus and again killed it after it re spawned. The second time, it gave more bonus! o.O