I'm going to nominate Fallout 3. Projectile weapons all have a satisfying "DAKKA!", which turns into a rumble of thunder when you use VATS and it goes into slo-mo. And the enemies react nicely, with blood spatters and the occasional head blown off by a well-aimed rifle shot. The one exception is the Minigun, which is rather lacking in gravitas for such a big gun and takes a while to bring down an enemy.
The energy weapons are also quite nice. They aren't quite as exciting, but they deliver a satisfying "SPLORT" when you hit, and they have a nice-looking big red beam and reduce enemies to ash on a critical. Definitely makes combat fun.
The energy weapons are also quite nice. They aren't quite as exciting, but they deliver a satisfying "SPLORT" when you hit, and they have a nice-looking big red beam and reduce enemies to ash on a critical. Definitely makes combat fun.