Spectrum is a free, browser-based hidden-core space racing game on Base network. You don't pick what's inside your ship. You forge a mystery ship, and the protocol assigns it hidden Spectrum Cores (Nova, Rolo, Telex, Unik). Each element moves up or down each race day, and your ship's hidden core mix determines how it performs. Your job as a pilot is to discover your ship's behavior through racing — then use that knowledge to call the right [thrust or drift] commands.