Grenades shouldn't blow you down except at very close range
Reality: grenades are not so powerful that they will bounce you around unless you are really close to the grenade, like lying on top of it.
The human body has so much inertia that small explosions tend to shred the body in place, instead of blowing it intact out of windows. Descriptions of small grenade explosions don't have the victim blown across a room, but instead dismember them in place. Unpleasant but true.
A grenade going off on the other side of a brick wall to you will not bounce you around from the ground. Won't happen.
If you want to get realism, then get Neo to add more bass into a grenade explosion and feed that into your stereo's subwoofer. The main effect of a grenade explosion to a protected position is the air pressure wave from the explosion. The ground shock would be very small. If anyone has the
Interactor from
Aura Systems, then that could give the effects of a nearby explosion or shot.
Large explosion are very different, but still wouldn't make the ground shake like an earthquake unless they were extremely large and close. I have been to firepower demonstrations with the Australian military and seen live ammunition from machine guns, mortars, artillery, strafing, and up to and including 2000lb bombs being dropped. I also am licensed to use explosives for specific purposes and have had some small experience with explosives. I have seen, heard and felt some both small and large explosions, and they are usually nothing like you see on television.
What I would like to see are some effects of grenades in restricted spaces, where the shock waves bounce off the walls and the expanding gases are restricted in the direction they can escape. Since I don't know of the exact model currently used in grenade explosions, I don't know if they have enhanced effects in such confined spaces. If they are using a flak cannon explosion, it may be the fragments bouncing off walls that will do extra damage to reasonably simulate the added effects.
What most people don't realise is that even firing a gun in a room will deafen them since they have been conditioned by Hollywood to believe that people fire large calibre guns inside small rooms can then have normal conversations. I don't think we should go that far in realism to fire a gun in a small room in a game and then have an annoying whine overlaying a much reduced sound during that game. A grenade would be even worse on the ears, but is not going to blow a team out the windows and doors as another effect.
Bill Lee