World of Warcraft
By chaining jumps against steep terrain, players historically reached unfinished zones, rooftops, and shortcuts that normal traversal was not meant to allow. Blizzard repeatedly adjusted terrain to curb it.
Players abuse grouping and phasing rules to swap layers or shards and repeatedly farm rares, resources, or world events faster than intended. The tactic has appeared in several expansions.
Dungeon and PvP players manipulate corners and terrain so enemies or other players briefly lose line of sight while casts or pulls still resolve in favorable ways. It is a classic spatial exploit.
Market players corner scarce items and repeatedly relist them to create artificial pricing ceilings, effectively exploiting low-liquidity server economies. It is notorious though not always against rules.
Some raids and outdoor bosses have had ledges or terrain pockets where mechanics fail or pathing breaks, allowing easier kills. These safe spots are a recurring WoW exploit category.