Gameboy + Metal = Chipmetal
Or chuggtuning, as Mike (whom is is the brainchild of) likes to call it. Its 100 Hand Slap (which I've posted here before, but this is their first proper release, all the mixes totally changed, some re-writing). The EP is called Year One.
100HandSlap | Facebook
To be had from here, for nowt:
Year One | Datathrash Recordings
Not sure how to embed the bandcamp player...tis but a click away anyhow.
And nowt is cumbrian for free.
Edit: and theres a bacon sandwich and pint of beer in the post for anyone that can identify all the geeky references and samples in it.
Edit 2: A track off it, entitled The Hunt (my personal favourite)