Choose GDO Masters
Choose GDO Masters if it matches what drew you to this matchup. GDO Masters launched in 2021.
GDO Masters vs Underground: World War
GDO Masters and Underground: World War both land in Action 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 Action games on Steam. GDO Masters (2021) is 5 years older than Underground: World War (2026). Underground: World War has co-op; GDO Masters 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 Underground: World War
Choose Underground: World War if you want an Indie and Early Access game with Shared/Split Screen Co-op, HDR available, and Co-op. On Steam, it's the newer release (2026) and ships with the modern feature baseline. Underground: World War launched in 2026.
Both GDO Masters and Underground: World War sit in Action on Steam and both list Multi-player, Shared/Split Screen, and Shared/Split Screen 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
 GDO Masters |  Underground: World War | |
|---|---|---|
| Released | 2021 | 2026 |
| Genres | Action | Action, Indie, Early Access |
| Platforms | Windows | Windows |
| Steam Deck | Unrated | Unrated |
| Price | 9.99 USD | Price unknown |
| Steam reviews | 1 reviews | — |
| Multiplayer | Multi-player | Multi-player, Shared/Split Screen Co-op, Co-op |
| Developers | Dropkick | Underworld Interactive |
Side by side
- Both are Action games on Steam.
- GDO Masters (2021) is 5 years older than Underground: World War (2026).
- Underground: World War has co-op; GDO Masters does not.
GDO Masters vs Underground: World War — FAQ
- Should I play GDO Masters or Underground: World War first?
- If you want chronology, GDO Masters (2021) came out before Underground: World War (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 GDO Masters and Underground: World War similar?
- They overlap on Action 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.