Exploration EXP is bonus exp for killing a creature that has been around/alive for very long. Which is why I focused on yellow mobs along main roads, and red/yellow mobs in quiet corners of maps – because most people ignore them.
Even with a normal booster I believe you can get exploration exp that is more than double the regular kill exp.
Awesome, I was doing just this and decided to take a look online to check out some tips for my next one. Glad to hear I was doing it right! I’ve gone from lvl 47 to 70 during my time on the booster so far just from map clearing and killing mobs in low population areas of maps.