The GO Series has been quiet on DSiWare for a few months but it's about to return with action shooter GO Series: Undead Storm, a four-player co-operative shooter that shares a small similarity or two with Valve's legendary zombie face-off.

Developed by Japanese team G-Style, it's a top-down affair with support for four players via local wireless connection, with team play encouraged: you'll need to share weapons and ammo to succeed. Should a comrade fall in combat you can revive them, putting yourself in harm's way at the same time, so be cautious.

It'll cost 200 Nintendo Points when it's released in the next few months.