The Rise of Downloadable Content in Slot Gaming Over the past ten years, the introduction of downloadable content (DLC) has significantly changed the slot gaming landscape. At first, slot machinesnetent slots were only found in actual casinos and had a small selection of themes and gameplay features. With the emergence of online gaming platforms, developers started looking into new & creative ways to improve player retention and engagement. As a result of this change, players can now access previously unobtainable new features, themes, and bonuses thanks to the advent of downloadable content.