As I've said in the past, Steins;Gate is a pretty fantastic anime that surprised me quite a bit. I don't want to spoil anything, but it involves a [kinda] mad scientist and time travel. The game is also great, and has been out on the PC in the US for some time.
According to Rice Digital, it's going to debut in Europe physically and digitally on June 5 for the PS3 and Vita. Publisher PQube notes that it's still in the submission process for the US, and it should be nearly finished. Whenever that business is taken care of, an updated date will be given.