ChainStaff is a 2D action shooter built on twin-stick foundations, enhanced by a strong central mechanic: the ChainStaff, a multifunctional weapon that can be used for attacking, grappling, shielding, or interacting with the environment. The gameplay is fast and accessible, with solid ideas and a good variety of situations, although in practice the weapon is mostly used offensively. The choice system – whether to rescue or devour soldiers – is an interesting addition, affecting upgrades and endings. Among the drawbacks are a fairly linear level design, poorly integrated secret areas, and occasionally imprecise physics. The visual style is original, but inconsistent.