Choose DEATH NOTE Killer Within
Choose DEATH NOTE Killer Within if it matches what drew you to this matchup. 1,367 Steam reviews back the pick.
DEATH NOTE Killer Within vs Castle of Blackwater
DEATH NOTE Killer Within and Castle of Blackwater both land in Strategy, Casual on Steam, which is why they keep getting compared. The comparison below is built from each game's Steam metadata — release year, genres, categories, Steam Deck status, price, and review score — refreshed daily by imho.run's scraper. Headline differences: Both share Strategy, Casual on Steam. DEATH NOTE Killer Within (2024) is 1 year older than Castle of Blackwater (2025). Castle of Blackwater scores higher on Steam reviews (92.5% positive) than DEATH NOTE Killer Within (87.1% positive). No login or purchase needed — scroll for the full table, the verdict FAQ, and links to ranked similar games for both titles.
Which should you pick?
Choose Castle of Blackwater
Choose Castle of Blackwater if you want an Action, Indie, and RPG game with Online Co-op and Co-op. On Steam, it's free to play, so the barrier to trying it is zero. Castle of Blackwater launched in 2025.
Both DEATH NOTE Killer Within and Castle of Blackwater sit in Strategy and Casual on Steam and both list Multi-player, Online PvP, and PvP, so either pick lands in the same broad neighborhood. Use the side-by-side table for the feature view, or follow the "Games like" links below to see ranked alternatives for either title.
Side-by-side comparison
 DEATH NOTE Killer Within |  Castle of Blackwater | |
|---|---|---|
| Released | 2024 | 2025 |
| Genres | Strategy, Casual | Action, Strategy, Indie, RPG, Free To Play, Casual |
| Platforms | Windows | Windows, macOS |
| Steam Deck | Deck Playable | Unrated |
| Price | 4.99 USD | Free to play |
| Steam reviews | 87.1% positive (1,367 reviews) | 92.5% positive (80 reviews) |
| Multiplayer | Multi-player | Multi-player, Online Co-op, Co-op |
| Developers | Grounding Inc. | Castle of Blackwater |
Side by side
- Both share Strategy, Casual on Steam.
- DEATH NOTE Killer Within (2024) is 1 year older than Castle of Blackwater (2025).
- Castle of Blackwater scores higher on Steam reviews (92.5% positive) than DEATH NOTE Killer Within (87.1% positive).
- Castle of Blackwater is free; DEATH NOTE Killer Within is paid (4.99 USD).
- Castle of Blackwater has co-op; DEATH NOTE Killer Within does not.
- DEATH NOTE Killer Within is Deck Playable on Steam Deck; Castle of Blackwater has no Deck rating yet.
DEATH NOTE Killer Within vs Castle of Blackwater — FAQ
- Should I play DEATH NOTE Killer Within or Castle of Blackwater first?
- If you want chronology, DEATH NOTE Killer Within (2024) came out before Castle of Blackwater (2025). If neither is a sequel to the other, order doesn't really matter — start with whichever fits your current mood, since both share enough on Steam to make either a reasonable opener.
- Are DEATH NOTE Killer Within and Castle of Blackwater similar?
- They overlap on Strategy, Casual on Steam, so the catalogue groups them together — but "similar" depends on the specific mechanics. Use the genre + category rows above to decide whether the overlap matches what drew you to the one you've already played.
- Is Castle of Blackwater free?
- Yes — Castle of Blackwater is a free-to-play Steam title. DEATH NOTE Killer Within is paid (4.99 USD).
- Does DEATH NOTE Killer Within run on Steam Deck?
- Yes — DEATH NOTE Killer Within is rated Deck Playable by Valve. Castle of Blackwater doesn't have a Deck rating yet, so its Deck behaviour is currently unverified.