When comparing 9th Dawn II vs Radiation Island, the Slant community recommends Radiation Island for most people. In the question“What are the best open world Android games?” Radiation Island is ranked 25th while 9th Dawn II is ranked 41st.
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Pros
Pro Premium game
No ads or IAPs in sight, the game is a singular cost for all content at $6.99.
Pro Improved a lot of aspects from the first game
The sequel's map is larger and it features a new classless system to allow more freedom in character customization. It also added new elements like adding the ability to jump and adding platforming to capitalize on the new feature.
Pro Has a playable demo
You can try the game's demo before you purchasing to see if you like it or your device can run it.
Cons
Con Price is a bit steep
The price is a bit higher than the average Android Game. It might be justified when the multiplayer is enabled.