Supreme commander forged alliance... The sheer diversity, complexity, simplicity (yes i know they are contradicting points,) attention to detail, scale, and everything else about this game is truly amazing. This game has so many upsides that its hard for any one person to find them all, and so few major downsides (bearing in mind its an old game,) that anyone can enjoy it. Wether you enjoy watching the combined fire of 100's of tanks, robots, bombers, naval craft etc devastate an opposing army or base, looking on in awe as a few well placed artillery shots destroy a commander, and as a result take out an entire base, or simply seeing one unit defy all odds and defeat a far greater force, there is something for everyone, (and this is only naming a very very small minority of scenarios in-game, just a few of my favourites)
Combat. Well, the game allows you to construct armies of up to 1000 units, which makes for incredibly huge, exciting, and awe inspiring battles. When 2, 3, or even 8 armies clash in one huge battle, you get a moment that i just cant recreate in other games. You can fight over every type of terrain, be it land, sea, or the sky, (theres even a mod out there that lets you go to space.) Admittedly, after a certain point (eg when you have 4 players, each with 100's of units) the game does slow done a bit, as it has a set cap, meaning that even if you pc can handle it, it will slow it down anyway. This is the only major fault i have for the game. But if you can overcome this, you will be rewarded with the best combat in any rts game, period.
While i personally dont play the campaign, it is still amazing. Featuring a great storyline, and intense missions, the campgaign will make most people happy. Each mission is quite long (lasting hours in some cases) and each one has varying objectives, wether it is to destroy an enemy base, or civilians, or simply having to hold the line.
There are 3 factions (4 in the dlc,) each with there own playstyle and features. Wether you prefer an army or robots, the rugged look of futuristic human armies, alien inspired or armies, or even an alien army (with the dlc.) There is bound to be something everyone can enjoy. Each has its own unique campaign aswell, meaning no one is left out.
Even IF you get bored of the base game (i dont see how you could) there is brilliant mod support. The game features an in-game mod manager, and if you have something such as winrar, all it takes is a few minutes to add another 100 new units. An active community after all these years is present, updating and releasing all manner of content for the game, if you do manage to find something you dont like, such as, lets say the ui, there are a multitude of mods out there that would solve your problem. And, if your friend has the same mods as you, you can play together with them online.
Overall, i personally feel that this is the best strategy game ever created. All of its features are amazing (though a hd mod/dlc would be nice.) I hope my review helped you decide wether or not to get the game, and why wouldn't you, at £9.99 (£2.49 atm as its on sale,) this game is an amazing deal, i would still pay £40 for this game, no questions asked.
Ill end my review on a recent game scenario, one that i particularly enjoy.
I was hard pressed after 60 minutes or so. 2 alx (very hard) ai's had created a large base together, impenetrable to my forces. My defensive perimeter had buckled and fallen under the might of their joint army. A cybran experimental, a monkeylord, was approaching, and only a few measly tech 2 turrets protected my commander, a few mass and energy stations, and 2 engineers. I needed only a few more minutes to finish my construction, but a few minutes was something i did not have. An enemy navy had surrouned my atlantis submersible aircraft carrier, and would surely destroy it if it were to surface, but i needed it, and took the risk. It came up from the depths, instantly taking fire from 10 or so battleships. I slowed the game down untill it was 10 times slower than normal, allowing me to make crucial decisions, that i would otherwise have to skip. I ordered the carrier to unload at my location. I sped up, and watched as nearly 200 tech 3 gunships pured from its sides. The carrier fell, as did a quarter of my airforce, as the enemy moved in its destroyers and fihter squadrons. The gunships were falling fast. but i managed to get to my base with at least 100 left. They destroyed units as they passed, but my radar had been taken out. i circled around, finding that the enemy force was at least 3 times as big as i thought. I focused fire on an experimental, bringing it down, the ensuing explosion taking out some of the army. I managed to eventually destroy the force, leaving only 20 gunships left, but it was done. My mvaor experimental artillery was complete. I sent my remaining gunships over as scouts, finding the enemy commanders. The mavor shot shell after shell. Each one filled with a small nuke, and within a few minuted, both commanders were down, and as their nuclear reactors failed, they let out an explosion, tearing apart their base. I had won, and that, is why i love this game.