IMHO.

Warhammer 40,000: Gladius - Relics of War vs Cosmist

Warhammer 40,000: Gladius - Relics of War and Cosmist both land in Strategy 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 are Strategy games on Steam. Warhammer 40,000: Gladius - Relics of War (2018) is 8 years older than Cosmist (2026). Warhammer 40,000: Gladius - Relics of War has co-op; Cosmist does not. 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 Warhammer 40,000: Gladius - Relics of War

Choose Warhammer 40,000: Gladius - Relics of War if you want the Shared/Split Screen, Shared/Split Screen PvP, and Online Co-op side of the pairing. On Steam, it has co-op, so you can bring a friend. 5,122 Steam reviews back the pick.

Choose Cosmist

Choose Cosmist if you want an Action, Indie, and Casual game with Steam Leaderboards, Custom Volume Controls, and Stereo Sound. On Steam, it's the newer release (2026) and ships with the modern feature baseline. Cosmist launched in 2026.

Both Warhammer 40,000: Gladius - Relics of War and Cosmist sit in Strategy 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

Warhammer 40,000: Gladius - Relics of War vs Cosmist — Steam metadata comparison
Warhammer 40,000: Gladius - Relics of War — Steam game coverWarhammer 40,000: Gladius - Relics of WarCosmist — Steam game coverCosmist
Released20182026
GenresStrategyAction, Strategy, Indie, Casual
PlatformsWindows, LinuxWindows, macOS, Linux
Steam DeckDeck PlayableUnrated
Price39.99 USDPrice unknown
Steam reviews81.9% positive (5,122 reviews)—
MultiplayerMulti-player, Cross-Platform Multiplayer, Online Co-opMulti-player, Cross-Platform Multiplayer
DevelopersProxy StudiosGulbrandr Studio

Side by side

Warhammer 40,000: Gladius - Relics of War vs Cosmist — FAQ

Should I play Warhammer 40,000: Gladius - Relics of War or Cosmist first?
If you want chronology, Warhammer 40,000: Gladius - Relics of War (2018) came out before Cosmist (2026). 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 Warhammer 40,000: Gladius - Relics of War and Cosmist similar?
They overlap on Strategy 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.
Does Warhammer 40,000: Gladius - Relics of War run on Steam Deck?
Yes — Warhammer 40,000: Gladius - Relics of War is rated Deck Playable by Valve. Cosmist doesn't have a Deck rating yet, so its Deck behaviour is currently unverified.
Warhammer 40,000: Gladius - Relics of War vs Cosmist · imho.run