Melvor Idle - Into the Abyss is an expansion for the browser-born, numbers-go-up idle RPG Melvor Idle, developed by Games by Malcs and published by Jagex. If you have not already sunk time into the base game, stop here: this is not an entry point. Into the Abyss is built for players who have already mastered the core skill loops and are hungry for another layer of systems to optimize while their character quietly levels up in a background tab. The expansion introduces the Abyssal Realm, a new dimension that comes with its own set of Abyssal Skills sitting alongside the existing skill roster. That is the core pitch: more skills, more mastery tracks, more progression ceilings to push against. For an idle game, that is a meaningful promise. Melvor's entire appeal is the satisfying cadence of watching numbers tick upward, and Into the Abyss tries to extend that cadence with new environments and mechanics that are distinct enough from the base content to feel like a genuine expansion rather than a simple content patch. Where the expansion earns its keep is in the escalating difficulty curve as you push deeper into the Abyssal Realm. The "stakes get higher" framing in the game's own description is not empty posturing: progression gates are meaningful, and the new challenges require you to actually engage with the Abyssal Skill systems rather than just leaving the game running overnight. That kind of intentional friction is good design for the genre. It rewards players who actually read tooltips and plan their skill order, which is exactly the audience this expansion is aimed at. The mixed Steam review score, sitting at 45% positive from a relatively small sample, is worth taking seriously. The complaints worth paying attention to center on value: the expansion is a paid add-on to a game that already has a previous expansion, and some players feel the Abyssal content does not justify the price tag given the volume of new material. Others note that the Abyssal Skill integration can feel gated in ways that slow the satisfying idle rhythm rather than enhancing it. For a genre where the core loop is king, disrupting that rhythm is a real criticism, not a minor gripe. From a pure systems perspective, if you enjoy theorycrafting optimal skill orders and treating a skill tree like a puzzle to solve, Into the Abyss gives you new puzzles. The worldbuilding is exactly as thin as you would expect from an idle game: the Abyssal Realm is an aesthetic coat of paint over number systems, not a narrative destination. Do not come here for character arcs or branching choices. Come here because you want another 40 or 60 hours of optimized progression with a slightly darker color scheme and new skill bars to fill. The bottom line is that Into the Abyss is strictly for existing Melvor Idle fans who have exhausted the base content and the first expansion. If that describes you, the new Abyssal Skills and escalating challenge are probably worth your time. If you are even slightly unsure whether you are that person, the mixed reviews suggest you should wait until you are certain. Monika, Scout Team