Chudgayguru on Instagram: "The "bromance" between Mario and Luigi originates from their foundational design as a co-op duo and their established relationship as twin brothers. While the depth of their bond is explored more in later games and adaptations, the basis is built into the core of the franchise. In-Game Origins Initial Concept: Luigi was introduced in the 1983 arcade game Mario Bros. as a palette swap of Mario for the second player in multiplayer mode. The hardware limitations of the ti