Topic: Quick D20 Monster Conversion

[memesse]

Here is the problem : - i need mre monsters
-i need a quick reference card for monstrers conversion
- i don't want to write "all skills or feats precisly" i can adapt most of them
- i will only convert basic things such as BO BD stats ...
-i wnat to have the possiblity to have monsters at different levels such as level 1 goblns and level 5 goblins (captains)
- my source is monster advancer an internet site which is complete.

I will post step by step Work 1 st will be initiative.

[memesse]

initiative :

in HARP : i see in monster's and HARP manual init bonus varies from +10 to +30

In Monster advancer classic : -15 (fungus) +15 (elemental air)

conversion will be :
          3.5               harp
negatives to 0   ->     0
              1 - 3  ->   +10
              4 - 6  ->    +15
              7 - 9  ->    +20
             10- 12 ->   +25
                 13+ ->  +30
What are your suggestions ?

[pyrotech]

That might work for a quick conversion.  The only other thing I could think to do would be to make a conversion based on the stats + talants that the two systems use to determine init.

D20 was DX bonus + Feats + other mods as I remember, while HARP is 2x QU bonus + talents.  If you just equated DX bonus to QU bonus (maybe DX bonus x 2 = QU bonus would work better) for this then add in any talent bonus (these would probably work 1 for 1 but I'd need to look closer) you may get some decent conversion numbers.

This would be a bit harder to do, but not much if you are already converting stats anyway.

Regards,

[memesse]

concerning stats, i won't convert stats but only bonus .
No matter how things are calculated in both system they are coherent and equitable for all monsters.
The important is the bonus they give.

concerning stats in harp a dragon as only 75 in strengh but racial bonus is +48 if i convert strengh from D20 i have to convert all racial bonses too it will be he same for every thing.

the important thing is the bonus to add to the dice Roll in game the source of the bonus may be different but always keeps logical.

ps sorry for my poor english i am French. So for Initiative i will keep the table i made in step 1 next step simple conversions (BMR  ...)

[memesse]

Easy Conversion :

Level : no changes
Size : fine diminutive -> tiny
         tiny small -> small
         medim -> medim
         large > large
         huge gargantuan colossal -> huge 
BMR : goblin d20 30 ft harp 12
         centaur 50ft  harp 20   
         ratio is 2.5
         so BMR =D20 speed / 2.5
hits : same
#enc : same
outlook : same
treasure : DM discretion (in game adaptation)
special abilities : DM discretion (in ame adaptation)

Finish : to be continued : attacks, DB, resistance rolls.

[memesse]

DB : D20 : from 10 to 40 HARP from 0 to 165 a simple x4 ratio may be appropriated.

OB : harp ob = 20+(10 x D20 att)

RR : stamina and based on fortitde1 wiil on will  and ration will be 10 times D20 bonus but problem for Magic ? 

[Tommi]

What D&D?
Our group is still playing 3.5... And I think that D&D 5 has not yet penetrated very far. My answer is based on D&D 3.x

At least attack will be too high. Old Dragon in HARP has OB less than 200. In D&D mature red dragon has attack of 34 (base attack 25). So even even 20+ 5*D20 attack might be too much. I'd say that it is the same for other monsters too. 

[memesse]

D&D version is 3.5 and D20 is a shortcut for D20 system for red dragon OB will be 20+(5x34) =190 in harp, for fire dragon i read OB= 210 or 190 it match

[Thom @ ICE]

Here's the easiest thing....  It may not be perfect, but it doesn't have to be.  It just has to work and be close enough.


D&D is d20 base
HARP is OEd100


Therefore, for any skill related bonuses, simply do x5.
For OB, don't bother with the +20 - just use the att x5.   For that dragon with +34, it becomes +170.
Keep in mind that there is a damage adjustment for the attack size that gets applied in HARP.


RR - not familiar enough with D&D rules on this, so you might need to make other adjustments.


Init is different since it is not % base - so just use +10.
-15 becomes -5
-5 becomes +5
+15 becomes +25

[dagorhir]

Keep in mind that there is a damage adjustment for the attack size that gets applied in HARP.

D20 damage is not connected to the attack bonus. One could potentially determine the attack size based on the damage die used.

RR - not familiar enough with D&D rules on this, so you might need to make other adjustments.

Same as the attack bonus, essentially x5 d20 bonus. You then have to determine which RR it applies to.

[Thom @ ICE]

Understood - you can add in an additional bonus to the damage based upon D20 die type - but in that case it would be just as easy to identify the attack type and size and simply skip the d20 die type.  Why convert things that are obvious?


Sounds pretty straight forward on the RR.

[dagorhir]

I generally go with:

d4 = tiny
d6 = small
d8 = medium
d10 = large
d12 = huge

This works generally well. I must admit I don't convert as much as duplicate the monsters from d20 that don't exist in harp. I use the d20 stats as a guideline, so my harp versions are similar but different.

I will certainly review some of my creations once the bestiary comes out.

[Thom @ ICE]

Whatever works for you... I would simply go with gut on that - but end result would likely be the same.
Good luck with it.

[dagorhir]

My design also have a bit of gut feeling in them.

Also, D20 creature can have multiple attacks of the same type, like 2 claw attacks. In these cases I sometimes increase the damage one level and make it a single attack.

I stated in a previous post, I don't exactly convert creatures but design them often starting from a similar harp creature and make necessary changes to them, instead of converting from scratch.

The bestiary will likely improve on this a lot.

[Thom @ ICE]

From what I have seen so far, I think you'll like it.