Welcome to the Splatoon Raiders arcade games, which are as challenging as they are fun. Here's everything in our Splatoon Raiders arcade games guide:What are the Splatoon Raiders arcade games? The arcade games can be found at the arcade machine, which is an unlockable upgrade to the training grounds. How do I unlock the Splatoon Raiders arcade games? You can get the first two Splatoon Raiders arcade games when you unlock the Hideout Ship construction.