Only from 24th of April at 14:00 (server time) to 11 of May at 12:00 (server time), by buying gold get resources for free! You can get up to 7 million resources!

Buy 200 gold pieces and receive 10, 000 resources,
Buy 500 gold pieces - receive 100 000 resources,
Buy 1,000 gold pieces - receive 500 000 resources,
Buy 2,400 gold pieces - receive 1 000 000 resources,
Buy a 3500 gold pieces - receive 2 000 000 resources,
Buy a 5100 gold pieces - receive 3 000 000 resources,
Buy 11,000 gold pieces - receive 5 000 000 resources,
Buy 22,000 gold pieces - receive 7 000 000 resources!