Thursday is #GURPSDay – Our Houserules


  • Bang Skills Cost Double Instead of Triple
  • Costs FP/ER is -10% Per Level, Capped at -40%
  • DR With Absorption (B46) Costs Less
  • Age-related Traits Cost Half, and Unaging is 5 CP

GURPS is pretty much the perfect roleplaying game for our needs. Its only major flaw is that once you get enough skills tied to one attribute it becomes far more cost effective to simply increase that attribute, gaining everything else that goes with it, instead of increasing the individual skills. Other than that and a few minor annoyances, it has served us very well since 4e released back in 2004, and remains our go-to game to this day. We’re actually about to start up a Fairy Tail game in which I’m looking forward to being on the player side of the screen for once.

I solved the skills-attributes problem in two ways:

  • finding reasons to use characters’ skills with other attributes (which is why GURPS has you record the Relative Level), and
  • encouraging players to take “Bang Skills”.

Here’s how we deal with that one big problem and those few minor annoyances:

Bang Skills Cost Double Instead of Triple

Learning to play GURPS is dead simple if someone else makes your character: Roll 3d6 under the target number on your character sheet. That’s oversimplified a bit, but you really can learn everything you need to play the game on one sheet of paper, like on my own GURPS Extra-Lite.

But making a character is another story and best done with the help of someone experienced (the sheer number of options can be overwhelming, so I encourage GMs to come up a list of what they will or won’t allow in that campaign) – especially when it’s time to buy skills. That remains the most difficult thing to explain to new players, but is easy once it finally clicks.

One way to make it even easier is with “Bang Skills” (“Wildcard Skills” sidebar on B175). Bang Skills cover vast numbers of skills with one super skill, and are very expensive as a result: Very Hard x 3.

As an example, the Professor on Gilligan’s Island would have Science! as his main skill. It would cost him 24 CP to get it equal to his IQ, and then 12 more per level after that. As a 150-point character, that’s asking a lot. Since I want to encourage my players to take Bang Skills, I only charge them double the VH cost instead of triple even though our games usually start at 200-250 points.

Costs FP/ER is -10% Per Level, Capped at -40%

For advantages that have to be maintained, you may take:

  • Costs 1 FP per 10 seconds, -20%
  • Costs 1 FP per second, -40%

Take note of the -40% limit. The same also applies to abilities that use Energy Reserves (Powers 119).

In digging through my old notes it appears that at some point in the past I was convinced that even -10% per level was too little, and that this was even better:

  • Costs FP’s value decreases with level: CFP 1 is -25%, CFP 2 is an additional -10%, and each additional level adds -5%. So it goes -25% / -30% / -40% / -45%.

It makes good sense because CFP 1 means you immediately go from infinite uses to at most 7-8 per battle – a pretty significant difference. But CFP 2 only drops you to 3-4 uses, and CFP 3 to 2-3. Since I forgot about it I haven’t actually tried it yet, but will in my next campaign.

DR With Absorption (B46) Costs Less

  • Absorption: Heals HP or FP, +40%
  • Absorption: Heals HP and FP, +60%
  • Absorption: (One Trait) xY, +5%
  • Y is the level of Absorption for that particular entry.
  • Absorption: Every Trait, +50%

In Rev. Pee Kitty’s article “Absorption Revised“, he details why absorption is too expensive, so I won’t duplicate that, but here’s Natsu from Fairy Tail as an example:

[6.5 * X] DR X (Magic, -10%; Limited (fire), -40%; Absorption: Heals ER, +40%; Absorption: ST x5, +25%; Absorption: Burning Attack x3, +15%)

In short, that means Natsu takes X less damage from fire-based attacks, and when he does he can use that energy to restore his ER, increase his ST (and therefore damage), or add dice of damage to his fire spells. It costs his player 6.5 CP per point of DR.

Age-related Traits Cost Half, and Unaging is 5 CP

From Rev. Pee Kitty’s House Rules “2. Reducing the value of ‘flavor’ traits”:

The values of all age-related traits (Extended Lifespan, Longevity, Self-Destruct, Short Lifespan) are halved, except for Unaging, which costs 5 points. Terminally Ill no longer exists, except when granted via an Affliction.

From the day GURPS 4e released I thought that Unaging was overpriced simply because it is mostly flavor and almost never has any mechanical effect, so I was happy when I found out that I wasn’t the only one only charging 5 CP for it. Halving the cost of other age traits hadn’t occurred to me, but is a good idea.

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