Star Wars: Galactic Battlegrounds is an Age of Empires-style strategy game where players pick a faction and try to complete the objectives. The original game featured the Rebel Alliance, the Galactic Empire, the Royal Naboo Security Forces, the Gungans, the Trade Federation, and the Wookiees. Clone Campaigns, its expansion, included a new Air Cruiser model for all factions, a new type of supply droid, as well as the factions of the Grand Army of the Republic and the Confederacy of Independent Systems (aka, the Clone Army and the Separatists, respectively).
Tropes used in Galactic Battlegrounds
Anachronism Stew: Playing in Standard mode you can have a battle between the Empire and the Republic despite the fact that they are the same civilization at different points in history. You can even get Darth Vader versus Anakin Skywalker.
Artificial Stupidity: the AI is slightly better than in Age of Empires II in some departments, but still leaves a lot to be desired. The AI will frequently throw units at you one by one instead of mustering a proper attack force, units attacking buildings will keep doing so even while being shot to pieces by your troops. Their pathfinding and formation skills are also fairly dubious: ordering a group of units to attack a target only to watch the closest ones move away from it (to form up with the rear-most units, which the AI isn't very good at either) can be especially frustrating.
Ascended Extra: The Wookiees, despite not appearing in the movies as a faction (At least not until Revenge of the Sith), have a total of two campaigns of their own in the game, and one of them happens to be the Basic Training campaign.
Awesome but Impractical: the "grenade trooper", who carries a huge mortar that lobs thermal detonators at the enemy. In practice, though, she is mostly useless. Likewise with the "pummel", a sci-fi incarnation of the battering ram of old — in a game with Imperial walkers, heavy artillery and bombers.
All There in the Manual: The game itself elaborates somewhat on some events the movies either shown or implied. Likewise, the Prima Official Strategy Guide also elaborates on some of the events in the game (eg, that the Rebel and Imperial factions do indeed possess a maritime naval force and not just a space naval force.)
Construct Additional Pylons: while there are some Fixed Force missions, your forces always seem to be able to find the resouces to build a base and the recruits to field an army. In the second rebel mission, Leia Organa start out with a tiny squad deep in Imperial-controlled woods, not that this stops you from building a base and training a small army. Where she gets the recruits from is anyone's guess, I suppose they all snuck in after her.
Cute Machines: the Naboo air cruiser (the heaviest air unit you can build, meant to terrorize and decimate enemy armies) for some reason looks like... something totally not meant to kill anyone, and it's got a red clown nose (the Gungan Air Cruiser compensates for this by being a disgusting, bloody flying blob of... something that totally looks like it's meant to terrorize and decimate you).
Damage Is Fire: even metal buildings burn like they're made out of matches. Also, say good bye to the modest Age of Empires II flames — all SWGB fires look like they're fuelled by a mixture of nitro and magnesium.
Dark Action Girl: Sev'rance Tann, Count Dooku's Chiss apprentice and The Dragon as far as the Confederacy is concerned (preceding General Grievous).
Distant Prologue: The Gungan campaign, which mostly covers the Battle of Naboo, begins three thousand years before the events of The Phantom Menace, and dedicates the first three levels to Boss Nass's ancestor, Gallo, who is attempting the unite the Gungan tribes against the tyrant Boss Rogoe.
Prolonged Prologue: Said three levels might seem this way to casual gamers that were expecting to start fighting the Trade Federation right away.
Do Not Run with a Gun: All ranged units, including infantry, artillery, and even starfighters, are incapable of attacking without coming to a complete halt first. Although since this game was made using the Genie engine, this is to be expected.
Expansion Pack: Clone Campaigns adds two new factions and a couple new features.
Fragile Speedster: speeder bike scouts are incredibly fast, but also die very, very fast in combat.
Glass Cannon: Bombers are very fragile but can do a lot of damage if not countered, and artillery and cannons can take out buildings with ease...but can't shoot enemies who are too close.
Hero of Another Story: Echuu Shen-Jon, who is a supporting character in the Rebel Alliance campaign, is the main protagonist of the expansion's Republic campaign.
Hufflepuff House: The Royal Naboo are the only faction in the game that have no campaign to call their own.
Justified Tutorial: The Basic Training campaign revolves around a group of Wookiee settlers, led by Chewbacca's father Attichitcuk, who are taught by Qui-Gon Jinn on how to maintain a strong colony on the hostile world of Alaris Prime.
Limited Sound Effects: for example, all Imperial TI Es have a pilot saying "TIE Fighter reporting", or characters having only one stock phrase ("this is Leia Organa, this is Leia Organa, this is Leia Organa, this is Leia Organa), see also Most Annoying Sound in YMMV.
Recycled IN SPACE!: The game is often seen as Age of Empires IIRecycled IN SPACE! (since it uses that game's engine and general gameplay mechanics), albeit with a few new additions such as flying units, a rudimentary "power" system (buildings without a "power core" in its vicinity builds and conducts research at 1/4 speed), deflector shields (a second, regenerating pool of hit points), and space terrain.