VERY addictive!
As another reviewer noted, it kills the hours very quickly! Very fun but extremely challenging which might frustrate some. Unlike others, I am able to play this on my iPad2 but the glitchy video crops up when loading campaigns. Occasionally, the campaign screens get jittery and I have to re-start. An update is required.
Nevertheless, most enjoyable and worth the price (bought on sale).
AngloQbeccer about
iBomber Defense, v1.2