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 Shared/Split Screen Co-op side of the pairing. 5,122 Steam reviews back the pick.
Warhammer 40,000: Gladius - Relics of War vs Space Imperia 4X
Warhammer 40,000: Gladius - Relics of War and Space Imperia 4X 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 Space Imperia 4X (2026). Both support cooperative play. 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 Space Imperia 4X
Choose Space Imperia 4X if you want the DualShock Controller Support, Camera Comfort, and Playable without Timed Input side of the pairing. On Steam, it's the newer release (2026) and ships with the modern feature baseline. Space Imperia 4X launched in 2026.
Both Warhammer 40,000: Gladius - Relics of War and Space Imperia 4X sit in Strategy 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
 Warhammer 40,000: Gladius - Relics of War |  Space Imperia 4X | |
|---|---|---|
| Released | 2018 | 2026 |
| Genres | Strategy | Strategy |
| Platforms | Windows, Linux | Windows, macOS, Linux |
| Steam Deck | Deck Playable | Unrated |
| Price | 39.99 USD | Price unknown |
| Steam reviews | 81.9% positive (5,122 reviews) | — |
| Multiplayer | Multi-player, Cross-Platform Multiplayer, Online Co-op | Multi-player, Cross-Platform Multiplayer, Online Co-op |
| Developers | Proxy Studios | Breich Games |
Side by side
- Both are Strategy games on Steam.
- Warhammer 40,000: Gladius - Relics of War (2018) is 8 years older than Space Imperia 4X (2026).
- Both support cooperative play.
- Warhammer 40,000: Gladius - Relics of War is Deck Playable on Steam Deck; Space Imperia 4X has no Deck rating yet.
Warhammer 40,000: Gladius - Relics of War vs Space Imperia 4X — FAQ
- Should I play Warhammer 40,000: Gladius - Relics of War or Space Imperia 4X first?
- If you want chronology, Warhammer 40,000: Gladius - Relics of War (2018) came out before Space Imperia 4X (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 Space Imperia 4X 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.
- Do both Warhammer 40,000: Gladius - Relics of War and Space Imperia 4X have co-op?
- Yes — both list a co-op category on Steam. Specifics differ: Warhammer 40,000: Gladius - Relics of War ships Online Co-op, Shared/Split Screen Co-op; Space Imperia 4X ships Online Co-op, Co-op.
- 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. Space Imperia 4X doesn't have a Deck rating yet, so its Deck behaviour is currently unverified.