D3T are bringing the PSP version of Lemmings to the Vita with added touchscreen controls today on PlayStation Mobile. The iconic 16-bit title has you controlling the suicidal critters with some basic tools to get them to the exit.
UPDATE: Some proper screenshots here.
Published by Sony XDev, the game is available now (does PSM update ahead of the usual store update? EDIT, ahh its there, but you can't download it) for free on PSM. There's also EcoFish out on PSM this week, read about that on the PSN blog.