Book of Korvald arrives on consoles today as one of eastasiasoft’s more unusual releases. Known largely for compact arcade titles and visual novels, the publisher steps into far darker territory here with a side-scrolling action-adventure steeped in Norse mythology, eldritch horror—and unabashed adult content.
It’s a bold mixture: grim 9th-century Scandinavia, berserker combat, interdimensional parasites, and explicit character interactions all wrapped into one surprisingly expansive package. The result is messy at times, provocative by design, but undeniably ambitious for a mid-budget 2D action title.
A Scribe Marked by Darkness
You play as Korvald, a Norse scribe whose life is shattered when his village is destroyed and his family slaughtered. Branded a heretic and left for dead, he survives by making a pact with Qhroth’un, a parasitic eldritch entity that bonds itself to his body.
This symbiosis is the game’s central hook.
Korvald gains unnatural strength, rune-powered abilities, and access to devastating “Berserker” skills—but at the cost of his mental stability. The narrative leans heavily into themes of corruption, religious conflict during Christianity’s rise in Scandinavia, and the tension between primal violence and restraint.
It’s not subtle storytelling. But it is surprisingly dense.
Throughout the campaign—spanning more than 30 regions inspired by 9th-century Denmark, including cities like Ribe—you’ll encounter warrior nuns, mythical beings, and interdimensional forces who all play into a wider conspiracy threatening the world itself.
The story oscillates between grimdark seriousness and moments of pulpy fantasy indulgence. Whether that tonal blend works for you will depend heavily on your tolerance for the game’s adult themes.
Combat: Weighty and Flexible
At its core, Book of Korvald is a 2D side-scrolling action game. Combat is real-time, responsive, and built around a broad arsenal of over 200 weapons.
You’ll wield:
- Axes
- Swords
- Daggers
- Maces
- Whips
- Magical tomes
Each weapon type has distinct timing and weight. Axes feel heavy and deliberate. Daggers are quick and combo-focused. Whips control space effectively. Magical books introduce ranged elemental attacks.
The real depth, however, comes from the talent tree.
Korvald’s skills change depending on your equipped off-hand item. For example:
- Shields alter defensive rune abilities.
- Daggers unlock agile Berserker modifications.
- Magic catalysts enhance summoning powers.
This encourages experimentation. Instead of sticking to a single weapon type, the game nudges you to build around synergy.
The refined dungeon mapping system—introduced in the 2025 updates and included in the console release—makes navigation across its sprawling regions far less confusing than the original PC version. It’s a welcome quality-of-life improvement.
Thirty Bosses, Thirty Challenges
Each major region culminates in a boss fight. There are roughly 30 unique bosses, and while not all are mechanically groundbreaking, they’re varied enough to avoid repetition.
Some are brute-force encounters testing raw DPS. Others require rune switching mid-fight. A few incorporate environmental hazards or summoning mechanics.
Difficulty spikes occasionally feel uneven, especially in the mid-game. But overall, bosses serve as satisfying skill checks that reward preparation and build experimentation.
Scandinavia as a Playground
What stands out most is the scale. For a 2D action game priced at £15.99, Book of Korvald is surprisingly expansive.
Each chapter spans multiple interconnected areas inspired by historical and mythological Scandinavia. You’ll traverse:
- Coastal settlements
- Dense forests
- Cathedral strongholds
- Pagan shrines
- Hidden underground chambers
The art direction blends gritty medieval aesthetics with supernatural horror. While character animations aren’t cutting-edge, the environments are detailed and atmospheric.
Switch performance holds up reasonably well, though it occasionally dips during heavy particle effects. PS5 delivers smooth performance throughout.
The Adult Element: Integrated, But Divisive
There’s no avoiding it: Book of Korvald is explicitly adult-oriented.
The game features numerous alluring female companions, fully animated intimate scenes, and a Gallery mode to revisit unlocked content. This isn’t a minor side note—it’s a core component of the experience.
To its credit, these interactions are often tied to character arcs and narrative progression rather than random unlockables. However, tonal shifts between dark religious horror and sensual fantasy can feel abrupt.
For some players, this will be part of the appeal. For others, it may feel excessive or distracting.
It’s worth noting that the mature content is clearly marketed and PEGI 18-rated. The game does not disguise what it is.
Mini-Games & Life-Sim Elements
Between intense combat sequences, Book of Korvald offers lighter activities:
- Fishing
- Farming
- Brewing ale
- Drinking contests
- Arena battles
These systems provide gold, resources, and reputation boosts. They’re simple but effective pacing tools, preventing combat fatigue.
The life-sim elements aren’t as deep as dedicated farming sims, but they add texture to the world and reinforce Korvald’s role as more than just a weapon.
Rune Magic & Customization Depth
Korvald’s rune system is one of the game’s strongest features. You can:
- Slot elemental effects
- Modify Berserker states
- Summon creatures
- Alter cooldown mechanics
This level of customization allows for dramatically different builds. You can focus on heavy melee brutality, agile crit-based dagger play, or magic-enhanced summoning hybrids.
The system encourages experimentation and supports replayability.
Where It Falters
Despite its ambition, Book of Korvald has flaws:
- Animation stiffness occasionally breaks immersion.
- Some mid-game pacing drags.
- Adult content may feel tonally inconsistent with the darker themes.
- Combat hit detection can occasionally feel imprecise during crowded encounters.
It’s also not as polished as AAA action platformers. This is clearly a passionate mid-budget project rather than a blockbuster.
A Unique Entry in eastasiasoft’s Catalog
This is not the typical eastasiasoft release.
It’s larger, more mechanically dense, and far more mature than many of the publisher’s previous titles. The console release benefits from a year of PC balance patches and mapping refinements, making it the definitive version.
For players seeking a dark fantasy action game with substantial customization and mature themes, it fills a niche few titles occupy.
Final Verdict
Book of Korvald is ambitious, uneven, provocative, and surprisingly deep.
Its combat customization and expansive Scandinavian setting elevate it above typical 2D action fare. Its adult content is explicit and central—not an afterthought—and will either enhance or detract from your experience depending on personal taste.
It’s not perfect. But it is memorable.
And for £15.99, it offers substantial value.
