Choose Royal Revolt II
Choose Royal Revolt II if you want an Action, RPG, and Free To Play game with MMO, Online PvP, and PvP. On Steam, it's free to play, so the barrier to trying it is zero. Royal Revolt II launched in 2021.
Royal Revolt II vs Cat Undead Island
Royal Revolt II and Cat Undead Island both land in Strategy, Massively Multiplayer 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, Massively Multiplayer on Steam. Royal Revolt II (2021) is 5 years older than Cat Undead Island (2026). Royal Revolt II is free; Cat Undead Island is paid (Price unknown). 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 Cat Undead Island
Choose Cat Undead Island if you want an Indie, Adventure, and Simulation game with Shared/Split Screen, Shared/Split Screen Co-op, and LAN Co-op. On Steam, it's the newer release (2026) and ships with the modern feature baseline. Cat Undead Island launched in 2026.
Both Royal Revolt II and Cat Undead Island sit in Strategy and Massively Multiplayer on Steam and both list Multi-player, Online Co-op, 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
 Royal Revolt II |  Cat Undead Island | |
|---|---|---|
| Released | 2021 | 2026 |
| Genres | Action, Strategy, Massively Multiplayer, RPG, Free To Play | Strategy, Indie, Adventure, Simulation, Massively Multiplayer |
| Platforms | Windows | Windows |
| Steam Deck | Deck Playable | Unrated |
| Price | Free to play | Price unknown |
| Steam reviews | 72.9% positive (133 reviews) | — |
| Multiplayer | Multi-player, Cross-Platform Multiplayer, Online Co-op | Multi-player, Online Co-op, Shared/Split Screen Co-op |
| Developers | Flaregames | SG GAMES |
Side by side
- Both share Strategy, Massively Multiplayer on Steam.
- Royal Revolt II (2021) is 5 years older than Cat Undead Island (2026).
- Royal Revolt II is free; Cat Undead Island is paid (Price unknown).
- Both support cooperative play.
- Royal Revolt II is Deck Playable on Steam Deck; Cat Undead Island has no Deck rating yet.
Royal Revolt II vs Cat Undead Island — FAQ
- Should I play Royal Revolt II or Cat Undead Island first?
- If you want chronology, Royal Revolt II (2021) came out before Cat Undead Island (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 Royal Revolt II and Cat Undead Island similar?
- They overlap on Strategy, Massively Multiplayer 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 Royal Revolt II and Cat Undead Island have co-op?
- Yes — both list a co-op category on Steam. Specifics differ: Royal Revolt II ships Online Co-op, Co-op; Cat Undead Island ships Online Co-op, Shared/Split Screen Co-op.
- Is Royal Revolt II free?
- Yes — Royal Revolt II is a free-to-play Steam title. Cat Undead Island is paid (Price unknown).
- Does Royal Revolt II run on Steam Deck?
- Yes — Royal Revolt II is rated Deck Playable by Valve. Cat Undead Island doesn't have a Deck rating yet, so its Deck behaviour is currently unverified.