This is a very simple game,All you have to do is give something to do with horses (Horse Breed,Race Horse,Rider,Horse Track,ect.) for every letter.

Example:
Mallory101:A-Arabian
KatReader:B-Barbaro
Mallory101:C-Chaps(Horse Gear)
.....Rules...
Rules are you can not repeat anything anyone else says,no skipping letters! And no going in row.
Example:
Do;
Mallory101:A-Akhal-Teke
KatReader:B-Barb
Dont;
Mallory101:A-Andalusian
Malloy101:B-Belgian Heavy Horse

Let's see how many rounds we can go!