Crownfall is a free browser-based multiplayer strategy game set in a medieval world, built almost entirely with Claude Code (AI). Expand territory on a hex map, train 7 unit types from Militia to Knights, form kingdoms with real players, spy on rivals, and compete for dominance. Every 28 days a new competitive era starts — everyone begins equal. No download, no pay-to-win. Turn-based (288 turns/day), so it fits any schedule.