I took on Good, before I remember how people literally WERE running from me in Gears of War when I had The Hammer of Dawn.
Never the less, I play Halo, Left 4 Dead, Gears of War and Mass Effect.
All good games, all with good game play mechanics.
But it works very well for me in Gears of War, because a big variety of weapons have that effect on me. (Grenades, two main weapons and a secondary weapon) However, it works the best for me in Mass Effect due to an even wider variety of weapons you can hold on to at the same time.