Choose UNDECEMBER: 4th Anniversary
Choose UNDECEMBER: 4th Anniversary if it's free to play, so the barrier to trying it is zero. 4,951 Steam reviews back the pick.
UNDECEMBER: 4th Anniversary vs Diablo® IV
UNDECEMBER: 4th Anniversary and Diablo® IV both land in Action, Adventure, RPG 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 Action, Adventure, RPG on Steam. UNDECEMBER: 4th Anniversary (2022) is 1 year older than Diablo® IV (2023). Diablo® IV scores higher on Steam reviews (74.2% positive) than UNDECEMBER: 4th Anniversary (54% 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 Diablo® IV
Choose Diablo® IV if you want a Massively Multiplayer and Casual game with Adjustable Text Size, Subtitle Options, and Color Alternatives. On Steam, it carries the stronger Steam consensus at 74.2% positive across 18,420 reviews.
Both UNDECEMBER: 4th Anniversary and Diablo® IV sit in Action, Adventure, and RPG on Steam and both list Multi-player, Online PvP, and Online Co-op, 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
 UNDECEMBER: 4th Anniversary |  Diablo® IV | |
|---|---|---|
| Released | 2022 | 2023 |
| Genres | Action, Adventure, RPG, Free To Play | Action, Adventure, Massively Multiplayer, RPG, Free To Play, Casual |
| Platforms | Windows | Windows |
| Steam Deck | Deck Playable | Deck Verified |
| Price | Free to play | 49.99 USD |
| Steam reviews | 54% positive (4,951 reviews) | 74.2% positive (18,420 reviews) |
| Multiplayer | Multi-player, Cross-Platform Multiplayer, Online Co-op | Multi-player, Cross-Platform Multiplayer, Online Co-op |
| Developers | Needs Games | Blizzard Entertainment, Inc. |
Side by side
- Both share Action, Adventure, RPG on Steam.
- UNDECEMBER: 4th Anniversary (2022) is 1 year older than Diablo® IV (2023).
- Diablo® IV scores higher on Steam reviews (74.2% positive) than UNDECEMBER: 4th Anniversary (54% positive).
- UNDECEMBER: 4th Anniversary is free; Diablo® IV is paid (49.99 USD).
- Both support cooperative play.
- Steam Deck: UNDECEMBER: 4th Anniversary is Deck Playable, Diablo® IV is Deck Verified.
UNDECEMBER: 4th Anniversary vs Diablo® IV — FAQ
- Which is better, UNDECEMBER: 4th Anniversary or Diablo® IV?
- On Steam reviews Diablo® IV scores higher (74.2% positive) than UNDECEMBER: 4th Anniversary (54% positive). Both have enough reviews to trust the signal, so for players using reviews alone, Diablo® IV is the safer pick. Genre fit still matters — check the side-by-side table for the categories each game lands in.
- Should I play UNDECEMBER: 4th Anniversary or Diablo® IV first?
- If you want chronology, UNDECEMBER: 4th Anniversary (2022) came out before Diablo® IV (2023). 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 UNDECEMBER: 4th Anniversary and Diablo® IV similar?
- They overlap on Action, Adventure, RPG 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.
- Do both UNDECEMBER: 4th Anniversary and Diablo® IV have co-op?
- Yes — both list a co-op category on Steam. Specifics differ: UNDECEMBER: 4th Anniversary ships Online Co-op, Co-op; Diablo® IV ships Online Co-op, Co-op.
- Is UNDECEMBER: 4th Anniversary free?
- Yes — UNDECEMBER: 4th Anniversary is a free-to-play Steam title. Diablo® IV is paid (49.99 USD).