That rumbling sound you hear is all the "Langrisser" fans flocking to iOS now that they've found a spiritual successor that gets the most important points just right.
"Ash II" continues the strong story of the first title, but don't expect it to put up much of a fight until it gets some gameplay rebalancing in updates.
Take "Zombie Samurai" and replace the swiping with line drawing, and you've got "Stop Those Fish" in a nutshell. This is a good thing for fans of simple action games with a heavy resource management element.