As with my Armor and Invulnerability mods, I'm tinkering with Force Field as well. This is a draft, and may change, and I've yet to figure out how much Power I think the character would have to expend to keep the force bubble up and running.

Force Field: There are two types of Force Fields. Type A allows the character for create a protective screen/barrier of protective energy around themselves, or at a distance. The second type allows the character to project a beam, or a "Force Beam" from their body. Which version of the power the character has must be chosen at character creation.

A) The character can generate a protective energy field around themselves, with a Invulnerability Rating (IR) =1/5 their current Power score. So, a character with a Power score of 50 would be able to generate a Force Field with an IR of 10 within 1" of their person. When the character's Power score drops to 40, he would only be able to generate a field with an Invulnerability Rating of 8. Attacks inflicting damage equal to, or less than, the Force Field's IR are ignored by the character. If the damage sustained from an attack is greater than the the Force Field's IR, then the field collapses and must be reformed. Forming or reforming a Force Field is an action, but maintaining it only costs Power. PR=1/2 of the Force Field's IR, rounded up, to form the field, and 1/10th the field's IR, per turn, to maintain it. So a character with a who generates a Force Field with an 11 point IR would have to expend 6 points of Power to form the Force Field, and 2 points each turn to maintain it.

If the character expends the field the strength of the field they're able to generate decreases. The character may double the area protected by expending an additional 2 Power per turn. So if the character is expending 2 Power per turn to maintain a standard sized field, he could expand it to cover a 2" radius by paying 4 Power per turn. If he expanded the area to 4", he'd have to expend 6 power, and so on. For each doubling in size, the field's IR drops by 1 point.

Any feedback would be appreciated.

Just a couple...

1.  Does it still modify the chance to hit?

2.  If the attack penetrates and collapses the field, does it still get reduced?

I don't have my book handy but does Force Field as written currently require the user to spend 1 action to maintain the field? I ask because someone with 1 or at best 2 actions would effectively be doing nothing other than keeping up the force field. I do have a concern that it does alter force field quite a bit where it has damage that needs to be penetrated if you successfully hit it (although that does seem to be how it is done in the comics). Maybe some kind of mechanic where hitting the force field might be easier if it is a big globe than if it is conforming to the skin like armor because it never seems difficult to actually HIT a big force field in the comics, just to penetrate it.

I'll give the one action to maintain some thought, as I'm still tinkering with this, and if guys think it's too much of a handicap, I'll drop it, and make them expend movement instead.

On the PR front, I'm thinking 1/2 of whatever the FF's Invulnerability Rating is. So if you can create a FF with a rating of 10, it's PR would be 5 to create it. I'm debating it the character would have to expended power every turn to maintain it, but I'm leaning that way, as they wouldn't be able to keep the field up forever. I'd just have to figure out how much.

I'm also playing with the idea of the character being able to expand the size of the force bubble (something you see in comics), by paying out additional PR, but it would get weaker the larger the field grew. I'll post the initial draft for that later on.

Hi,

I've play tested something similar to this with my husband's character. 

He had few powers, and forcefield was the main one, so we beefed it up a bit.

He can make fields with a strength of 3 invuln per 1 PR.  He can increase/decrease the field as movement. 
It does not cost an action per turn to maintain, as that is lame.

Attacks that do not get a '0' on the combat chart bypass the field completely.  They do not reduce the invulnerability and easily hit the target.

So far it's worked well.  He is not a power gamer or someone who looks for every possible edge. 

The biggest threat he poses is enveloping the targets and effectively locking them out of combat.

To mitigate this somewhat, I have instituted a houserule bonus to hit the forcewall.  +5 to hit per 5' plane.  So a 10' square is +10 to be hit.  I figure that blows might still slide off the field and inflict no harm. 

He is difficult to harm, with a 0 to hit and 30 invuln, unless you have disintegration or light, in which case he's easy peasy. 

Thanks for suggesting this house rule, it's very helpful to our enjoyment.

If anyone else has tried this, I'd like to hear how it worked in your games.

Another thing I'm doing is breaking FF into an A and B version. The A version is the defensive screen, the B version is the attack. I'll work the B version up later.

Bump, bump, bump. And if any of you guys have tried this out, I'd like to hear a bit of feed back on how it worked for you. I'm also tinkering with the PR on this one as well. Another question, does Damage Rating (DR), sound better than Invulnerability Rating (IR)?

Bumping this up, as I've had (3) people ask me about my version of Force Field in the past two days. I still might tinker with this a bit more, but I want people other than me give this playtest. If it's "broken", then I'll make modifications.