IMHO.

Hearts of Iron IV vs Supremacy: Call of War 1942

Hearts of Iron IV and Supremacy: Call of War 1942 both land in Strategy, Simulation 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, Simulation on Steam. Hearts of Iron IV (2016) is 1 year older than Supremacy: Call of War 1942 (2017). Hearts of Iron IV scores higher on Steam reviews (91.1% positive) than Supremacy: Call of War 1942 (64.4% 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 Hearts of Iron IV

Choose Hearts of Iron IV if it carries the stronger Steam consensus at 91.1% positive across 120,833 reviews.

Choose Supremacy: Call of War 1942

Choose Supremacy: Call of War 1942 if you want a Massively Multiplayer and Free To Play game with MMO, Online PvP, and Online Co-op. On Steam, it's free to play, so the barrier to trying it is zero. 2,211 Steam reviews back the pick.

Both Hearts of Iron IV and Supremacy: Call of War 1942 sit in Strategy and Simulation on Steam and both list Multi-player and 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

Hearts of Iron IV vs Supremacy: Call of War 1942 — Steam metadata comparison
Hearts of Iron IV — Steam game coverHearts of Iron IVSupremacy: Call of War 1942 — Steam game coverSupremacy: Call of War 1942
Released20162017
GenresStrategy, SimulationStrategy, Simulation, Massively Multiplayer, Free To Play
PlatformsWindows, macOS, LinuxWindows, macOS
Steam DeckDeck PlayableDeck Playable
Price14.99 USDFree to play
Steam reviews91.1% positive (120,833 reviews)64.4% positive (2,211 reviews)
MultiplayerMulti-player, Cross-Platform Multiplayer, Co-opMulti-player, Cross-Platform Multiplayer, Online Co-op
DevelopersParadox Development StudioBytro Labs GmbH

Side by side

Hearts of Iron IV vs Supremacy: Call of War 1942 — FAQ

Which is better, Hearts of Iron IV or Supremacy: Call of War 1942?
On Steam reviews Hearts of Iron IV scores higher (91.1% positive) than Supremacy: Call of War 1942 (64.4% positive). Both have enough reviews to trust the signal, so for players using reviews alone, Hearts of Iron 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 Hearts of Iron IV or Supremacy: Call of War 1942 first?
If you want chronology, Hearts of Iron IV (2016) came out before Supremacy: Call of War 1942 (2017). 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 Hearts of Iron IV and Supremacy: Call of War 1942 similar?
They overlap on Strategy, Simulation 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 Hearts of Iron IV and Supremacy: Call of War 1942 have co-op?
Yes — both list a co-op category on Steam. Specifics differ: Hearts of Iron IV ships Co-op; Supremacy: Call of War 1942 ships Online Co-op, Co-op.
Is Supremacy: Call of War 1942 free?
Yes — Supremacy: Call of War 1942 is a free-to-play Steam title. Hearts of Iron IV is paid (14.99 USD).