[SS] Reigning in Projectile Damage

[vierasmarius]

It's a topic that's been discussed many times over: "Missiles do to much damage!", "Eggshells armed with hammers!", etc. The problem boils down to the different scaling of projectiles versus beams in Spaceships. Beam damage doubles for every x10 increase in output, and output roughly triples per SM, so beam damage scales at the same rate as ship HP (ie, x1.5 per +1 SM). Projectile damage is proportional to width of the rounds, which is generally consistent with the stats given in HT and UT. However, calibre doubles every +4 SM, meaning damage increases at a rate of about x1.2 per SM. Large guns and missiles (SM +11 and up) seem mostly balanced, but as you go down the scale solid projectiles become far more favorable. At SM +5, a Missile hit inflicts 7.5 times the damage of a typical beam weapon, over 5 times the HP of a same-sized ship - and that's without factoring in velocity that could easily be above 1 mps. Also, because ships can carry large numbers of smaller-sized weapons, there's great incentive to load up on massive banks of the smallest available missiles, because their damage-per-mass is so great.

Granted, this may be realistic. However, for most Space Opera settings it's very inappropriate, leading to battles that feel very out-of-genre. So my proposal is to come up with an alternate progression for projectile damage, more in line with beam damage. In my opinion, there's a "sweet spot" where beams, guns and missiles inflict damage relative to each other that feels "right" - at SM +9, Beams inflict 20d, Guns 30d and Missiles 60d. It's easy to see how this ratio could be maintained for other weapon sizes, by ignoring the weapon calibres and simply giving Guns x1.5 and Missiles x3 damage relative to Beams.

Guns have the disadvantage of being inaccurate compared to Beams, while Missiles have very limited ammunition and are vulnerable to Point Defense. However, both projectile types can use Proximity Detonation for a huge increase in potential hits. The only downside there is dropping the (modest) armor divisor. I think to better represent the hail of small fragments produced it may be appropriate to give Proximity attacks an armor multiplier of (0.2) or so.

Any thoughts on these options? Keep in mind, my intent is mostly to heighten the importance of beam weapons in Space Opera settings. While realism is generally important, machine guns and missile swarms are generally not in-genre - and when they are, they don't carry the phenomenal stopping power of GURPS SS projectiles.

[gruundehn]

Have you considered that beam weapons cannot really be defended against except by messing with the targeting system in some way, and slugs / missiles can be deflected / dodged / etc in addition? Thus missiles / slugs will hit less often and do less damage per shot than beam weapons.
Unless you have FTL sensors the first notice that you are being shot at by a beam is when it hits. With a missile or other projectile you will have time (depending upon speed and distance) to observe the shot and react to it.
The increased damage of the projectile would seem to be a compensation for this.

[vierasmarius]

Originally Posted by gruundehn

Have you considered that beam weapons cannot really be defended against except by messing with the targeting system in some way, and slugs / missiles can be deflected / dodged / etc in addition? Thus missiles / slugs will hit less often and do less damage per shot than beam weapons.
Unless you have FTL sensors the first notice that you are being shot at by a beam is when it hits. With a missile or other projectile you will have time (depending upon speed and distance) to observe the shot and react to it.
The increased damage of the projectile would seem to be a compensation for this.

That's why my proposal includes higher damage for projectiles than beams, in addition to what can be gained by high relative velocity. My issue with the RAW damage is that you frequently can't fail to kill something in a single shot. For example, a single 16cm missile traveling at 2 mps (standard velocity for TL9+ missiles) would inflict 6d*8(2), averaging 168 damage, enough to instantly cripple a ship 100 times the size of the firing craft. My model would give that missile a base of 6d damage, thus inflicting 6d*2 (avg 42) with velocity taken into account. It's still significant damage (which I think is appropriate for a weapon that, as you point out, is easier to defend against than a beam) but not quite so unbalanced.

Also note that at higher SM, the RAW actually gives projectiles disproportionately less damage, because of the different scaling. Under my houserule large-sized guns and missiles would still be competitive with beams for massive ships. Plus, there would be more reason for large ships to get Major Battery guns and missiles, since the scaling wouldn't be so skewed in favor of smaller projectiles.

[Apache]

Well, if you want to do a Space Opera game, and make beams more uber than projectiles, just have your space drive generate a super-powerful force field that pretty much stops projectiles in their tracks, regardless of relative velocity.

Or something like that, anyway.

Another thing to note is that the farther away you are, the easier it is to dodge/shoot down incoming projectiles (even if they're guided).

If you are trying to keep it 'realistic', just say everybody has Uber Point Defense Laser Batteries and call it a day.

[The Rampant Gamer]

Originally Posted by Apache

Well, if you want to do a Space Opera game, and make beams more uber than projectiles, just have your space drive generate a super-powerful force field that pretty much stops projectiles in their tracks, regardless of relative velocity.

Or something like that, anyway.

Another thing to note is that the farther away you are, the easier it is to dodge/shoot down incoming projectiles (even if they're guided).

If you are trying to keep it 'realistic', just say everybody has Uber Point Defense Laser Batteries and call it a day.

Along these same lines, I've toyed with the idea of just saying "missiles and guns were left behind a long time ago. They never proved to be that useful in space, so beam weapons were all anyone focused on. So, would you prefer plasma, laser or particle beams on your ship?"

[vierasmarius]

Originally Posted by The Rampant Gamer

Along these same lines, I've toyed with the idea of just saying "missiles and guns were left behind a long time ago. They never proved to be that useful in space, so beam weapons were all anyone focused on. So, would you prefer plasma, laser or particle beams on your ship?"

Space Opera frequently still uses missiles and bombs, but they don't dominant the battlespace like the ones in GURPS have a tendency to do. I'm just trying to find a way to include projectile weapons in their niche, without overpowering beams or producing too-lethal battles.

So, is the consensus that fiddling with the damage tables is a Bad Idea? And if so, why?