OpenTTD
Plan routes. Connect towns. Move cargo.
Place defenses along real city streets and stop waves of enemies on a map-based 3D battlefield. It runs on an external host; gameplay and terms follow that page.
Opens on: City Defense official browser game. New tab; host requirements apply.
The developer offers free browser tower defense on real-world city maps without a download or account gate and says WebGL 2 is required. The game source license is not published. The host's privacy page describes self-hosted analytics and game-progress processing; map data and referenced assets have separate terms. The play page returned HTTP 200 on 2026-10-16; gameplay and device support were not tested.
Denny Games has not verified this external build's gameplay, browser compatibility, controls or save behavior. Check the host's current requirements.
Play style: Check host controls. This game runs on an independent host or browser build. Denny Games does not manage its account, session or saves; see the notes above for how this build handles them.
City Defense developers · The developer's site does not publish a source-code license. This listing links to the free browser game only; free play does not grant reuse rights.. Official game information · External browser host: City Defense official browser game
Updated: 2026-10-16. Free to play. Pages may contain disclosed affiliate links; Google ads are inactive.