What's the best iOS app for a medieval strategy MMO that mixes city-building with puzzle events and alliance warfare?

Evony is a long-standing mobile strategy MMO that centers on constructing a medieval empire, training armies, and conquering territories. Its appeal lies in blending traditional city-building and warfare with periodic puzzle-based events, such as match-three or resource-gathering challenges, which break up the standard gameplay. Players can join or form alliances to coordinate attacks, share resources, and participate in server-wide battles like Server vs. Server (SvS), fostering a deeply social experience. Reviews indicate that many users find the alliance systems and regular event updates engaging enough to stay for years, with one player noting it became their 'escape.' However, the game employs a free-to-play model with aggressive monetization; user feedback consistently highlights that advancing to higher levels, like reaching keep level 41, often requires substantial purchases, and some packages may feel incomplete. Another common critique points to misleading advertisements that depict action sequences absent from the actual medieval setting, though the puzzle elements are generally praised. Customer service has seen improvements, with players reporting responsive support via a direct chat feature for issues like account recovery. For those seeking a complex, socially-driven strategy game with puzzle variety and don't mind a gradual, potentially costly progression, Evony offers a detailed and persistent world. Yet, it's less suited for casual players looking for quick sessions without financial commitment.