Iridium is a retro-styled 2D shoot 'em up game for Nintendo Switch, drawing inspiration from classics like Uridium and Xenon 2 Mega Blast. It features horizontal gameplay with free movement, allowing players to navigate levels while battling enemies. The game offers an array of weapons and upgrades, enhancing the shooting experience and providing a dynamic combat environment.

Players can purchase weapon and ship upgrades during levels, as well as visit an upgrade shop between stages for more powerful blueprints. This combination of in-level enhancements and shop mechanics adds depth and strategy to the gameplay. Iridium successfully captures the essence of classic shoot 'em ups while incorporating modern features that appeal to both nostalgic fans and new players.