Vibe-coded and vibe-engineered with Claude.Ai in two weeks of evenings. Browser City Tycoon is a free transport tycoon inspired by OpenTTD and SimCity. Build roads, rails, airports and ports, carry passengers and cargo, and watch villages grow into skylines. 25 vehicles, 14 industries, 75 attractions and landmarks, plus a Daily Challenge with global leaderboards. No download: play instantly as a guest or sign in with Google.