Due to lack of time to sustain it, selling one of a kind account on international servers. There are few active worlds, best one has arc 180, AO 200+, high titan and SASH great buildings, all the gold league buildings, all diamond expansions unlocked, etc. More than 2M forge points, hundreds of thousands of goods, 1k+ finish specials, enough QI resource/attack limited buildings to last few months without getting new ones. Versatile city producing 25k+ fp and 20k+ goods that can be converted into 20k+ attack fighting machine, beating 250 attrition cap should you want that. Also there's a HAU city just for fun. Diamond farms generate more than 1000 diamonds daily, can be raised 10-20% higher as there's more wells in inventory in some worlds, just need work on space/rearrangement. That's pure passive collection from wishing wells alone, which requires less than 5 minutes a day, most of those are logging in. No expedition, battlegrounds, seed vault involved, which can push diamonds generation even further. In other words, farms generate you more than 250 euro worth of diamonds monthly.