Choose Kung Fu Er San
Choose Kung Fu Er San if you want an Adventure and Casual experience. Kung Fu Er San launched in 2022.
Kung Fu Er San vs Underground: World War
Kung Fu Er San and Underground: World War both land in Action, Indie 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, Indie on Steam. Kung Fu Er San (2022) is 4 years older than Underground: World War (2026). Underground: World War has co-op; Kung Fu Er San 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 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 Kung Fu Er San and Underground: World War sit in Action and Indie 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
 Kung Fu Er San |  Underground: World War | |
|---|---|---|
| Released | 2022 | 2026 |
| Genres | Action, Indie, Adventure, Casual | Action, Indie, Early Access |
| Platforms | Windows, Linux | Windows |
| Steam Deck | Unrated | Unrated |
| Price | 2.99 USD | Price unknown |
| Steam reviews | 5 reviews | — |
| Multiplayer | Multi-player | Multi-player, Shared/Split Screen Co-op, Co-op |
| Developers | CMC Games | Underworld Interactive |
Side by side
- Both share Action, Indie on Steam.
- Kung Fu Er San (2022) is 4 years older than Underground: World War (2026).
- Underground: World War has co-op; Kung Fu Er San does not.
Kung Fu Er San vs Underground: World War — FAQ
- Should I play Kung Fu Er San or Underground: World War first?
- If you want chronology, Kung Fu Er San (2022) 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 Kung Fu Er San and Underground: World War similar?
- They overlap on Action, Indie 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.