Mutations

Would it be cool to have coat mutations such as albinism, menalism, leustisim, etc. Or even a horse with extra legs for those that want a challenge when breeding. I personaly think that the patterns we have are cool but i want to have a horse that have albinism and another with an extra pair of legs. Just a thought that i think other would like.

Horses cannot have albinism, it simply isn't something in their gene pool :) And a lot of mutations(like extra limbs) require either surgery or euthanasia, so no support.

Isn't a melanistic horse just ... a black horse?  Or are those two separate mutations?

Yeah....No. I second what KPH said on lack of realism as well as the effects of genetic defects. As extra limbs, heads, dwarfism in Minis & Friesians, etc would be considered genetic defects, not true mutations. Usually mutations in horses are color/pattern-based things like chimera, somatic mutations, grey inhibitor, bloodmarks on grey, brindle, reverse brindle, lacing, bend or spots, birdcatcher, chubari, reverse dapple, manchado, etc. While some of these may be passable to offspring such as brindle, bend or spots (partially linked to sooty in red based horses), tetrarch spots, etc, there is still a lot to be done research-wise into learning the exact causes and reasoning behind these occurrences. But, we're making headway as white spotting/dominant white is recognized with numerous tests now for it as well as other newer, more niche dilutions being studied to find the allele such as snowdrop and sunshine. Most mutations as listed above also don't present any notable health problems thus far that would make breeding them problematic. 

i could be misunderstanding but doesn't dominant white sort of count as leucism already?

@forgottenland: After looking into it, technically yes! Leucism is generally not the term used in horses, despite all three genes that when mutated are usually considered leucistic being very prevalent in horses. These genes are KIT (tobiano, sabino, white, etc), EDNRB (frame overo and/or LWS), and MITF (SW1, SW3, SW5, SW6, etc). 

ohh interesting, i wonder if leopard counts as well...

i do see the appeal in this idea, it just sounds like a completely different game entirely. not very EV like but for a more fantasy focused sim it would be pretty cool

After reading the reply's i realize my idea is not entirely realistic and i had not realized that EV is no longer under devolopment as i had just gotten back on EV last week after being off for 6 months due to personal issues. I do not own horses so i did not know that albinolism and other mutations where not possible with horses. 

if EV ever starts being developed again (i'm going to keep hoping as long as it's still technically possible), it would be very cool if there was a super low chance--maybe 1-3% possibility--you could get a horse/foal from the EC that had one of the color/pattern mutations Sib mentioned, (chimera, somatic, grey inhibitor, bloodmarks, brindle & reverse brindle, lacing, birdcatcher, chubari, reverse dapple, manchado) and then that horse had a slightly higher but still relatively low--like maybe 5-10%--chance of passing on the gene in breeding. that would make for a very difficult, but fun challenge. and if it wasn't an option when making a custom horse and wasn't included in the marking applicators in the credit shop either, that would make it even more challenging, you'd have to rely entirely on chance. that would be awesome. still so much potential for this game! really hope it can make a comeback one day. :(