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He is, but because both sides are so similar, there is not much difference in coat color. I can see the splotches from brindle on his stomach. Subtle.

That is exactly what you are supposed to see. If you don't like patchy chimera and want brindle stripes instead you can pay for a new seed. The patches are much rarer.

If I’m correct, chimera is brindle, it’s the same thing, I think the name just updated when Ammit upgraded the the way we view and modify it. I believe before it was just “bay brindle” with the one genetic code, where now it’s “bay and bay” with two genetic codes?
But chimera is the new term for brindle, you can reroll any chimera/brindle horse many times and get thin or thick “stripes” or get blotches, but the blotches are more rare to come across

ETA: I do stand corrected, it is not the same thing as others have explained here (sorry about that!), the more I think I know the more I learn that I do not know lol.

If you are asking why your horse is not a loud brindle it is because not all brindles have loud markings. It does not make them less of a brindle.

Its not the same. Being chimera gives them the ability to have 2 different sets of genes. Because they have 2 different sets of genes, they have the ability to have 2 different patterns. Think 2 horses in one and everytime you reroll, you get a different version of that horse.

@AspenFarms I know what chimera is, but the way brindle being explained here is really melting my brain.

I am being told that my supposed-to-be-brindle horse is showing patches of chimera instead ("as it should"), and if I want to see the brindle I need to pay to refresh the image seed.

I am not understanding this at all, which is impressive because I've studied equine genetics for nearly three decades.

I think you're getting conflicting answers.

Chimerism usually causes stripes in game, but it can cause patches instead. See examples:

SB G1H Days Massive
(more obvious)


SB G1L Agonizing Outlets
(Very subtle)


SB G1H Floating Pepper

Your horse is exhibiting the striped Brindle phenotype. You can add sooty or DP to get one side darker, re-roll to see if you can get a higher contrast image seed or a patched phenotype, or add a pinto pattern/up the white factor to make it more noticeable brindle.

So to answer your other question: all chimeras in game either show brindle stripes or patching. Brindle can describe either a chimeric (2 sets of DNA) horse, or a dun with hom dun factor promoter 1 (one set of DNA, but the color name ends in "brindle"). I think that's causing some of the confusion here.

In real life, chimeras can be brindle or patched, and some somatic mutations cause brindle striping without the 2 sets of DNA. It's similar in game, but not exactly the same.

The in game chimeras are distinguished by one single gene on one strand being different. For example, on my first two examples, there's a sooty on one strand but not the other. The third example has a cream on one strand. That's for the foundation horses. If you breed them and get a rare second gen chimeric foal, they can have any combination of parent genes on either strand. I have one example of a lined chimera I purchased and she's bay on one and black appaloosa on the other:


SB 2B Individually

You can see both parents are foundation chimeras with the single gene difference in the two strands.

Brindle is striping nothing more. Multiple things can cause stripes.

All the people telling you bridle means chimeric are flat-out wrong. Brindle means stripes and that is it. Brindle does not mean chimeric.

Chimerism is one one the things that can cause brindle stripes. The herd helper makes chimeric horses. Any chimeric horse in the game can be brindle with the right image seed.

. Brindle can describe either ...

Brindle describes stripes that is it. Chimerism and DFP1 can result in brindle stripes. Brindle does not describe chimerism or DFP1. Brindle is a look, not a gene, not a genetic condition.

The in game chimeras are distinguished by one single gene on one strand being different.

Chimeric horses in-game can have any number of different genes just like real life. Chimeric only means DNA from two different animals.

Well, now I'm confused again..

Unfortunately, members who are trying to help are giving you a lot of incorrect information in this thread. :(

When you create a foundation horse with a "brindle" herd helper it will create a horse for you with two sets of DNA. This is called chimerism. In real life, sometimes chimeric animals have stripes. Often they do not. Chimerism often hides. In the game, chimerism can be totally hidden or very loud. Just like real life, it does not always show.

In real life, chimerism is one way that brindle stripes are formed. The other ways are a gene called inheritable brindle, and "skewing" where a normal marking like gray or roan gets all twisted up in utero and makes stripes. All versions of stripes are called brindle. Brindle just means stripes. It is frequently impossible to just look at a brindle horse and know what caused the brindle stripes.

The game has chimerism and inheritable brindle as the ways you can get brindle stripes. Only when a horse has inheritable brindle (Dun factor promoter) will the word brindle show in the name.

Chimerism is not inheritable in real life or in the game, but because this is a game chimeric horses have an increased chance of producing chimeric foals (with or without brindle stripes). Also, chimeric horses in the game are far more likely to have visible brindle stripes than in real life.

The three ways to get chimeric horses in the game are 1) from herd helpers with the brindle tag 2) as a rare result of breeding and 3) by merging two horses together in the GMT lab.

I hope that clears some stuff up. Please if you have specific things you want to be clarified just ask. I am happy to give more detail where things might be unclear.

"The second set will always have a random allele mutated to something else."

That's what I was trying to say when I misspoke and said that the difference is one gene between the two pairs. I've only ever seen one difference on all my herd-helper-created brindles. Apologies for my inaccuracies.

Yup sounds like you got it!

To help you out I added to your horse for you. Now it has very clear stripes :).