Free browser chess with a coach that explains your moves. Play against eight AI strengths or a friend online, solve 3,000 puzzles, and explore openings, traps and annotated master games. Choose a classic board, kids mode or 3D battles. Works on phone and desktop with no account or download.

Lead an ancient civilization in this free browser 4X strategy game. Found cities, explore hex maps, research technologies and negotiate or fight with rival peoples. Choose from eight civilizations and pursue domination, science or culture victories. Play on phone or desktop; no download or account.

A free 3D real-time strategy game: gather resources, build a colony, advance through four ages and command an army. Choose from three civilizations and face the AI or a friend in online 1v1 using a four-letter room code. Play on phone or desktop, with no download or account.

Build and manage a city in your browser. Lay roads, zone homes and businesses, connect water and power, and balance taxes, services and growth. Switch between 2D and 3D views, try six scenarios, and save your city locally. Free to play on phone or desktop; no download or account.