The successful balance between exciting innovation and comfortable familiarity is a delicate one. It's true that large doses of creativity can sometimes lead an otherwise solid project wildly awry, but on the other hand, there's little value in rehashing ideas and not going far enough. In the case of Just Cause, the developers have innovated with one shining addition, but otherwise let the scales weigh heavily with well-trodden material.
Hewing closely to the Grand Theft Auto sandbox formula we all know and love, Just Cause invites players along on the regime-toppling adventures of Rico Rodriguez in a fictional Latin American nation. This "revolutionary" romp will feel instantly recognizable to anyone who's spent time with Rockstar's franchise: plenty of weapons, some civilians to mess with, driving like crazy in vehicles, and just enough story to keep things moving. The developer, Avalanche Studios, set their sights low by meeting the minimal requirements in every aspect except for the one standout feature I mentioned—a parachute.
While traipsing across the strife-torn island, Rico has instant access to a talented sack of silk that can deploy and retract at a moment's notice. It may not sound like much, but this little bundle of insanity gets a surprising amount of mileage. There's a sort of liberating freedom in knowing that every precipice, cliff and tall building represents an airborne escape rather than painful death and restart. The parachute is also a means of unexpected entry, making vertical insertion behind enemy lines an extreme (in the Dew sense) and frequently exercised option.

To complement the aerial hijinks, Avalanche has also endowed Señor Rodriguez with a healthy disrespect for the laws of physics. He can leap incredible distances and thumb his nose at inertia so long as he's going from the roof of one vehicle to another (think the Spider-Man action of the PSP's Pursuit Force taken to another level) and his handy-dandy grappling hook turns any passing car into an instant parasail adventure. This utterly amusing "float/fly/fall anywhere" mechanic may be completely ludicrous, but then again, I don't play videogames for a healthy dose of reality.
Although this surreal chute takes a project rocketing towards indistinguishable mundanity and endows it with "weekend rental" status, there's no denying that the other elements of the Just Cause experience don't fly nearly as high. In every respect, the game gives off a janky, loose energy with its biggest problems being underlying, pervasive ones—it just can't shake the feeling of being globally low-rent and poorly focused.
Besides things like sketchy vehicle handling and the occasionally unclear objective, a larger, more central example would be the way the back of the box proudly proclaims "250,000 acres to explore." I'm not sure if this is the largest game world ever created in terms of square footage, but what I do know is that the available area is far too large to serve any entertaining purpose. The lions' share of this territory is empty, hilly forest with absolutely nothing going on, existing only to be crossed. If the developers hadn't included the useful "extraction" feature that warps Rico from one place to another, the game would be unplayable from sheer boredom.

Likewise, the package also states "303 missions to accomplish", but the majority are simplistic, Xeroxed forays into tedium. The character models are clunky, the storyline is instantly forgettable, and the enemy AI vacillates between being stupidly brainless for on-foot soldiers and absurdly, impossibly aggressive for enemies in vehicles.
It's questionable whether or not a tighter design and more attention to detail could have elevated Just Cause past a me-too status at best, but it couldn't have hurt. As an admirer of all things unusual and unusually entertaining, Rico's bizarre parachute tricks justify the four to six hours it takes to complete the campaign, but once the novelty wears off, there's not much here to merit a second glance that hasn't been done better by other games—mission accomplished, but just barely.
Disclaimer: This review is based on the Microsoft Xbox 360 version of the game.