This abbreviation/shortcut that originally means "imbalanced" is also used in the world's biggest trading card game Magic:The Gathering. It denotes too much power in a card.
"The Power Nine are all great examples of imba cards."
"Stop using Counterspells and Dark Rituals they're so imba."
"Stop using Counterspells and Dark Rituals they're so imba."
by BadBoyBen August 18, 2007