The PSN remake of Spelunker is ready to explore the dark, cavernous recesses of your console when it makes its way to America, courtesy of Tozai. GamerBytes reports that the NES game has been updated with "new graphics, and a 6-player online cooperative mode." Spelunker HD can be played with both classic and updated graphics.
If you're curious about Spelunker HD, you can read through the game's Trophy list. Unlike most PSN games, the game includes a Platinum Trophy. Depending on how Tozai prices the US release, this may be one of the cheapest Platinums ever. But, if playing video games isn't "your thing" and you're still curious, check out the many, many YouTube videos on the game. Also ... does this post seem familiar?