with improved XD ranges of for US models and for international models. However, Hasbro later adjusted their marketing campaign for these blasters to no longer claim performance improvements after consumers found them to be negligible. Many XD blasters were simply their N-Strike Elite and N-Strike Mega counterparts re-shelled in different color plastic. N-Strike Modulus N-Strike Modulus (formally Nerf Modulus Series) is a sub-line of the N-Strike Elite series with an emphasis on user-customization through attachments and accessories. Many Modulus blasters came packaged with a variety of new and unique attachments; for instance, the Nerf Tri-Strike came included with attachments for launching Mega darts and foam missiles in addition to the standard N-Strike Elite darts. These blasters are typically white and grey, with additional accent colors such as green and blue. AccuStrike Series The AccuStrike Series is a category of Nerf blaster released in spring 2017. Some AccuStrike blasters are unique to the line, while others are re-skins of blasters from other lines. They include and are intended to fire an updated dart of the same name which are designed to improve accuracy. However, AccuStrike darts and blasters are cross-compatible with those of the N-Strike Elite line. AccuStrike darts have also been used the in N-Strike Mega line and the Rebelle series. Zombie Strike The Zombie Strike series was introduced in 2013 and contains blasters similar in performance to that of the N-Strike Elite line; some of which are simple re-skins. Zombie Strike blasters are themed as weapons made from a toolshed, and are often green and orange in color. Early Zombie Strike blasters seemed to have an American-cowboy style, though later blasters seemed to follow a zombie-apocalyptic theme. The Zombie Strike line also has several variants, such as: Z.E.D Squad, simple recolors of existing blasters Power Shock, a sub-series which features blasters with built-in lights and sounds, themed around the human survivors discovering a way to power their blasters Survival System, which focuses on optional attachments, similar to the Modulus line Rebelle Nerf Rebelle is a line introduced in fall 2013 aimed at the female demographic. As such, Rebelle blasters incorporate feminine designs and pastel colors. This line was discontinued in 2020. Vortex The Nerf Vortex line, launched in 2011, uses “XLR” (“Xtra Long Range”) foam discs as opposed to darts. They came in three different colors, green, white or glow-in-the-dark. These discs are capable of traveling at greater distances