SNK Playmore has released Bermuda Triangle and Gold Medalist as PlayStation minis for PSP and PS3.
Bermuda Triangle is a top down shooter originally released in 1987. Gold Medalist pits you against the rest of the world by competing in various events to win the 1988 Seoul Olympics. I find it quite delightful how retro this all is.
These games join several other SNK Neo Geo titles already available and are available right now for $2.99 each.