Free/F2P gold sources. Battle of Constantinople (BoC): 2M+ win or lose (min Gold chest x5 ~2-15M; max x20 ~8-60M); requires top-20 alliance and being one of 20 chosen participants. Battle of Gaugamela (BoG): 2.4M+ win or lose (min x8 chests, max x25 = 7.5-55M) plus a separate personal-score reward. Levy at the Keep converts Gems to Gold (semi-paid): keep Coinage research maxed (doubles output); at Keep 28 5,000 gems ~13.5M gold, worsening with more levies -- stop by ~15,000 gems (beyond that only ~5M per 5,000 gems); resets daily at server reset. Crazy Eggs: 4.4M+/day (8-hammer Isabella I egg -> 1.2M; activating 8- and 12-hammer eggs each +1.6M). Kill Goblin with a Double-Drop general (Cleopatra/Baibars + King's Ring): up to 4M gold per Lv7 Golden goblin. Kill Knight Bayard with double-drop: 200k-2M each. Kill Vikings: 2.5-3.5M for 50 easy Vikings, up to 400M in a hard rally. Trade Products Event: 2M (50 exchange items per 1M). World Boss: 5 free/day for 250k-1.5M; top-100 single-hit ranking 250k-5M. Activity score: ~1,916K at Keep 28 (proportional to Keep level). Login Reward (10 consecutive days): 6.2M total. For a bot: gold is mainly needed for research/skill books/Levy; farm it free via battlefields, double-drop Goblin/Bayard hunts and Crazy Eggs rather than paying.
Original research source: Evony Guide Wiki