From American Twitch streamers to animated movies based on Danish building blocks, the ninja now has very little to do with the unrest that roiled 15th century Japan in what’s known as the Sengoku period. The ninja aren't associated with the Hōjō clan or the Siege of Kawagoe Castle. Throughout the years, they’ve become catch-all warriors who can perform amazing feats — and that includes sneaking onto your game console as part of your Nintendo Switch Online subscription via a Sega Genesis classic.
