0 A.D. is a free open source Real Time Strategy ancient warfare game with beautiful graphics and amazing potential. Here are the features of their newest release, Alpha 7:

All-new dynamic territory design. Territories change throughout the game based upon the structures built by the players. Each structure has a “weight” given to it and a radius within which this weight has an effect based on the importance of that building, and these values affect borders proportionally. If one of a player’s buildings falls into enemy territory due to shifting borders, then that building is planned to slowly lose loyalty until finally converting over to the enemy’s side. (In the meantime, in 0 A.D. Alpha 7 it loses health instead, until it is destroyed.) This can be stopped and slowly reversed if the border shifts and the building comes back to the player’s side.

An all-new and unique Carthaginian civilization, including:
Revamped and rebalanced units.
A completely remodeled navy from the ground up.
New docks, Iberian, Celt, and Italian embassies, walls, and civic center.
Dozens of new shields, helmets, and props.
New Easter Egg objects, including a Tophet structure, Samnite warriors, and the Sacred Band of Ba’al.

A brand new main menu design with new dynamic background, depicting the Spartan tradition of mothers sending off their sons to battle, telling them to come back either with their shield or on it. (Thanks, dashinvaine!). The menu and UI graphics have all been converted to the new style.

Music and Sound:
Several new tracks, all composed and directed by Omri Lahav, most featuring live percussion and flute segments (Thanks, percussionist Dror Parker and flutist Marta Mc’cave!):
Brand new 0 A.D. main theme, “Honor Bound”, to go with our new menu.
Carthaginian peace tracks “Peaks of Atlas” and “Mediterranean Waves”, featuring live percussion with a North African feel.
“Dried Tears” defeat music track.
Re-done Hellenic peace track, “Forging a City-State”, with awesome flute improvisation segment.
100+ new sound effects from the DynamiteSoundBytes team, dozens of them audible in-game.

New maps: Carthaginians Sandbox (Demo Map); Siwa Oasis; Cycladic Archipelago IV; Gallic Fields; Migration (Thanks, SMST, NOXAS1, and Yodaspirine!)

Miscellaneous: New Palisade objects, including wall segments, gates, towers, and spikes; Lion, Lioness, Infant Giraffe, and Giraffe death animations (Thanks, Athos!); A new “Islands” Random Map Script (Thanks, howlingflute!); An all-new Roman Triumphal Arch Easter Egg object (Thank you, Brightgalrs!); A LOTR-like Elven ship Easter Egg object (Thanks, Shield Bearer!).