Milking a franchise is one thing, but if you hook a milk machine up to a cow for long enough eventually nothing's going to be left. The cow's going to fall over, die, and the only thing you'll be sucking out are the innards of a rotting carcass.
This seems to be the route Team 17 has gone with the Worms franchise, but who can blame them? They keep pumping out the same game with a shiny new name slapped on it and people keep buying the damn thing. I think we've been playing what's almost the exact same game for fifteen years. So is Battle Islands worth it? Maybe.