The experience bonus in the Wall of Slaughter zone is slightly different from other hot zones, developer Nodyin explained:
"The experience went up by about 10% in that zone. The modifier in the zone was already fairly high so the gain wasn't as large as it might have been for other zones relative to the previous "not hot" status. On balance the zone already has fairly good rewards in addition to the Hot Zone loot items and quests as well as very easy access for most players."
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