This strategy works, I'm really dissapointed at civ5 for being a children's game compared to ci4, personally I never got past 1AD (marathon speed always)
Map details: panagea, standard size, difficulty diety, conquest victory.
1. The civ you choose is not important, some of them will be better at start, some will be better later on (personally I prefer India (war elephants), France (for the culture bonus), Aztec (jaguar heal) or Rome (unstoppable combo balista+legion)
2. Starting locations should have at least 2 luxuries (in most cases they have 2 lux)
3. Initial warrior -> scout with him (do not engage barbarians with him till the second warrior had been build), while scouting try to circle your capital. Upgrade the warriors with medic = very important)
4. Build a second warrior, once he comes out use both warriors to kill barbarians for gold.
5. Reserch priority -> based what lux hexes you have (so either calender, mansory), then animal husbandry (to see horses) and then archery (as Ghandi you go for the elephants), folowed by writing -> iron -> rifling -> other which give you units.
6. After the 2nd warrior pops out build a worker (you can try to steal one from a state civ but it is a bit risky and random which states will be close), in total you need,at least before you start attacking, (big number now = 3 workers!, more then that is not neccesary), once you attack a civ, you will get workers from them
7. As for policies you go in the Honor tree, (the one which tell you when barb camps spawn, and then discipline (15% combat strenght) and further into the tree.
8. After the worker pops, (your capital should be lvl 3-4) build a settler, and if you have the gold buy one also (buy it as soon as you can), and settle them on the best places you can find (try finding a spot with 3 lux hexes and horses - it is very rare but you can find them)
9. Sell lux to the AI, (use GPT as a currency, it gets you way more gold)
10. In your capital build 3x archers. When the second archer is near the end gather all your army near a targeted civ, and bribe other civs (if they are not already to start a war with it), and just wait till the 2nd archer will come to the the rest of your army. The trid archer is for barbs/defending your cities.
11. Declare war -> Position your army good (warriors serve as tanks, standing and healing near the city while the archers attack the city) the key to win a diety game is your position in combat, pupet cities if you have happines, if not raze them or sell to other Civs for more GPT, it better to sell cities to weaker and more distant civs, what works great (selling 2-3 cities near each other to different civs = constant wars, less for you to worry about)
12. From this point you should have all the necessities to wage a constant warr, if you researched iron and none of your cities has it near try looking if state civs have it and ally with them
13. If a civ will "capitulate" (try to give you some cities, change the deal to peace treaty for GPT), at around 1900 BC (marathon speed) you should have around 60-70 GPT, while your "capitulated" foes will have no gold, no economy etc = you won.
Map details: panagea, standard size, difficulty diety, conquest victory.
Spoiler :
1. The civ you choose is not important, some of them will be better at start, some will be better later on (personally I prefer India (war elephants), France (for the culture bonus), Aztec (jaguar heal) or Rome (unstoppable combo balista+legion)
2. Starting locations should have at least 2 luxuries (in most cases they have 2 lux)
3. Initial warrior -> scout with him (do not engage barbarians with him till the second warrior had been build), while scouting try to circle your capital. Upgrade the warriors with medic = very important)
4. Build a second warrior, once he comes out use both warriors to kill barbarians for gold.
5. Reserch priority -> based what lux hexes you have (so either calender, mansory), then animal husbandry (to see horses) and then archery (as Ghandi you go for the elephants), folowed by writing -> iron -> rifling -> other which give you units.
6. After the 2nd warrior pops out build a worker (you can try to steal one from a state civ but it is a bit risky and random which states will be close), in total you need,at least before you start attacking, (big number now = 3 workers!, more then that is not neccesary), once you attack a civ, you will get workers from them

7. As for policies you go in the Honor tree, (the one which tell you when barb camps spawn, and then discipline (15% combat strenght) and further into the tree.
8. After the worker pops, (your capital should be lvl 3-4) build a settler, and if you have the gold buy one also (buy it as soon as you can), and settle them on the best places you can find (try finding a spot with 3 lux hexes and horses - it is very rare but you can find them)
9. Sell lux to the AI, (use GPT as a currency, it gets you way more gold)
10. In your capital build 3x archers. When the second archer is near the end gather all your army near a targeted civ, and bribe other civs (if they are not already to start a war with it), and just wait till the 2nd archer will come to the the rest of your army. The trid archer is for barbs/defending your cities.
11. Declare war -> Position your army good (warriors serve as tanks, standing and healing near the city while the archers attack the city) the key to win a diety game is your position in combat, pupet cities if you have happines, if not raze them or sell to other Civs for more GPT, it better to sell cities to weaker and more distant civs, what works great (selling 2-3 cities near each other to different civs = constant wars, less for you to worry about)
12. From this point you should have all the necessities to wage a constant warr, if you researched iron and none of your cities has it near try looking if state civs have it and ally with them
13. If a civ will "capitulate" (try to give you some cities, change the deal to peace treaty for GPT), at around 1900 BC (marathon speed) you should have around 60-70 GPT, while your "capitulated" foes will have no gold, no economy etc = you won.