Sacred 2:Command and Conquer
In Ice and Blood expansion, on the Crystal Plains, when you reach the southern outpost of the seraphim, you can take up a quest named Green Crystals, which prompts you to locate a malfunctioned seraphim device, the Crystal Collector.
The Crystal Collector is located at the edge of the map, west of the outpost:
Players of the Command and Conquer game, will notice that the Crystal Collector bears a very close resemblance to the Tiberium Harvester MK I, which is found in Command and Conquer 1: Tiberian Dawn.
The green crystals, as well, bear a striking resemblance to a tiberium field:
The green crystals quest references a jammed collector's almost-drunken path finding for the tiberium harvesters that soon became famous for getting stuck against an obstacle, or, at worst,ending up in the middle of the enemy base.
