Fear not, MK Arcade trilogy will be released this summer for 800 MS points. It will have MK 1, MK 2, and UMK3.
http://www.trmk.org/news/20989/mortal_kombat_arcade_collection_arriving_summer_2011.html
http://www.trmk.org/news/20989/mortal_kombat_arcade_collection_arriving_summer_2011.html