Achievement HORSE/PIG is a series in which two participants play a game of H-O-R-S-E using video game challenges created by the community. Typically this is Jack and Geoff playing maps created in Forge mode of Halo Reach, but lately other competitors have participated with greater frequency, and they have branched out into other games, notably Trials Evolution. The series debuted on December 6, 2010 starring Geoff and Jack, and it ended on January 2, 2016. HORSE has proved to be popular enough that it has been used as an attraction at multiple conventions, namely RTX and Halo Fest at PAX.