Though adapting the board game into a feature film might seem like an opportunity for filmmakers to create a piece of escapism like The Hunt for Red October (but on a battleship), the makers of Battleship have turned into a Transformers clone with forgettable characters battling CGI effects.
In an opening act that goes on way too long, the audience is introduced to two brothers (Taylor Kitsch and Alexander Skarsgaard) and a stern admiral (Liam Neeson). There's nothing particularly interesting about any of the dynamics, but the film leisurely spends 30+ minutes setting them up before the aliens invade.
Once the aliens show up, the film devolves into mostly incoherent and horribly edited set pieces (in one instance, a character is trapped in a cabin with an alien, then suddenly the character is shown running away from the cabin with absolutely no ex planation).
And after the first act, Liam Neeson's character disappears almost entirely from the film.
It's possible to make a good movie adaptation of a board game (Clue still has a well-deserved following), but Battleship is a bloated mess. Save your $10 and just play the board game instead.