I made a solo tabletop game for the Carta SRD jam!

Borealis is a single-player card game in which you will quest throughout the icy north in search of the Borealis, a legendary shrine to the gods of winter, and confront all that you find along the way using the tools and the knowledge that you gain while doing so.

stuartlangridge.itch.io/boreal

feeling quite pleased with the next encounter thing I have designed for my D&D party. I like it when I have enough backstory written down that I feel comfortable letting people walk into it and I will know how to react whatever happens because I understand the motivations of NPCs involved. Even if the party never find most of this stuff out, I'm fine with that. Quite chuffed with myself :)

@korruptor you made this?? that's bloody amazing. Although it has truly embraced the concept of bloom in a way nobody else has ever exceeded 🙂

Avrae [BOT] — Today at 09:05
(Player) makes a Perception check!
2d20kh1 (1, 1) + 3 = 4

heh.

@pench4nt agreed that it might be too powerful; that's what I'm concerned about. Subtracting from the opponent's save seems worryingly powerful even over and above the already-maybe-too-powerful nature of this ability certainly; it's there to model the "I give it my all to hurt these people" goal of the whole ability, where it'd be daft if it worked on my sword hits but didn't work on my fireball, but I understand the concern!

@pench4nt ok, I have had a look. You want a tileLayer (leafletjs.com/reference-1.7.1.), and set the tiles URL to "{z}/{x}/{y}.png", and then you create tiles like 2/4/12.png for "the tile at (4, 12) at zoom level 2". I can't test this because I don't have a map with a set of tiles at different zoom layers. github.com/ghybs/Leaflet.TileL should help if you don't have some tiles at zoom level 4, say. Making a tileset is a lot of work, though!

@pench4nt ah, ok. I haven't done tiling because I don't have a map in sufficient detail to require it (I've got a huge all-of-Faerûn image at 4000px or so for the world, and separate maps for places). Not sure if you need a tile server for tiles, or if the filesystem works. I'll have a look if I get a chance.

@pench4nt see stuartlangridge.github.io/simp for an example of how I do it. I don't break up the map into tiles, though; it's one big map image (and for my campaign it's a really big image; 5000x4000 or so), but it works fine for me. See the source for details and how I added a marker.

@pench4nt I can imagine it leading to death spirals, but I'm OK with that; it is choice, after all. I'm more worried about balance in the other direction; whether one is way more powerful with this mechanic. I mean, you can imagine guaranteed passing of a save followed by a round of cure wounds, for example. It might be more interesting to be able to sacrifice HP to subtract from an opponent's save. Still thinking about the ramifications here...

re: cr 

@Sandra totally, yes! What it's modelling is wizards in fiction throwing everything into a last move -- it was the most recent Harry Dresden book that gave me the thought, but the general approach seems interesting to me. D&D doesn't model that very well -- if you're on your last legs and want to throw everything you have into a desperate attack, you're dependent on a dice roll to do it and you can't choose to improve it at a cost to you. This would allow that. I need to work on balance.

re: cr 

@Sandra I have indeed, yup! All of it :)

extra thought: you have to sacrifice your total level in HP to add +1 to the roll.

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Random idea for a mechanic for a 5e class: allow adding to a d20 roll by sacrificing hit points. I'm not sure what the conversion factor would be, and someone surely must have already had this idea, but I think it'd be interesting. Shades of magic systems where stamina is what fuels magic directly; this would be similar. Also vaguely reminiscent of the blood hunter and similar, but that's more indirect than this. Imagine: burn 5hp for a +1 on a roll, which you have to do before the roll, say.

@kensanata @ttrpg ok, when I said "a while back" I meant 31 years ago, but here it is. From "Fear is Good", Roger E. Moore's editorial from Dragon Magazine #156, April 1990.

@kensanata @ttrpg there was a great editorial in Dragon Magazine a while back explaining how Jim Ward would run Gamma World one-shots where everyone could play a god of their choice and they'd all lose to the Death Machine, a sort of automatic robot thing that Ward had invented. I'll see if I can dig it up.

idea to try in a 5e game soon: get hold of a bag of devouring; polymorph a bad guy into a thing with a strength of 1; throw the thing into the bag; badda-bing, badda-boom.

@ackthrice it is a bell curve centred on 0, indeed, as per attached image.
First, it's gotta be symmetrical around zero, because a single dice roll is and so a sum of many of them will be. Secondly, zero will be highest because -1s and +1s will "cancel out". Then, it's a bell curve because that's what dice rolls do :-) I don't have the stats chops to understand why exactly, but that's how I think of it. (And the attached graph is from 10,000 4dF dice rolls.)

I wonder whether it might be a bit more interesting (and less automatic) with this extra:
the PC in the duel can choose to make an Intimidation or a Deception check (contested by NPC Wisdom or Insight respectively). A PC winning Intimidation on the round that NPC would have fired means they don't fire until next round; PC winning Deception makes the NPC fire even if they wouldn't. You can make no check, and you can't use the same check two rounds in a row.

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ng76.itch.io/microduel is a neat tiny set of rules for (Wild-West-style) duels. It's really short but tl;dr: if you both don't shoot ("stare down") for a round, it multiplies the damage of the one who does shoot, so 1 round staredown = 2x damage, 2 rounds = 3x damage, etc. DM rolls d6 for how long an NPC waits. Nice.

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