OpenTTD

An open-source clone of the classic game Transport Tycoon Deluxe. It attempts to mimic the original game as closely as possible while extending it with new features.

OpenTTD is modelled after the original Transport Tycoon game by Chris Sawyer and enhances the game experience dramatically. Many features were inspired by TTDPatch while others are original.

Significant enhancements from the original game include:

• bigger maps (up to 64 times in size)
• stable multiplayer mode for up to 255 players in 15 companies, or as spectators
• dedicated server mode and an in-game console for administration
• IPv6 and IPv4 support for all communication of the client and server
• in game downloading of AIs, NewGRFs, scenarios and heightmaps
• new pathfinding algorithms that makes vehicles go where you want them to
• autorail/-road build tool, improved terraforming
• canals, shiplifts, aqueducts
• larger, non-uniform stations and the ability to join them together
• mammoth and multi-headed trains
• different configurable models for acceleration of vehicles
• clone, autoreplace and autoupdate vehicles
• the possibility to build on slopes and coasts
• advanced/conditional orders, share and copy orders
• longer and higher bridges including several new designs, plus fully flexible tracks/roads under bridges
• reworked airport system with many more airports/heliports (e.g. international and metropolitan)
• presignals, semaphores, path based signalling
• support for TTDPatch NewGRF features offering many options for graphics and behaviour configuration/modification
• drive-through road stops for articulated road vehicles and trams
• multiple trees on one tile
• bribe the town authority
• many configuration settings to tune the game to your liking
• save games using zlib compression for smaller sizes, while not interrupting gameplay
• significant internationalisation support. OpenTTD has already been translated into over 50 languages
• dynamically created town names in 18 languages, plus NewGRF support for additional languages
• freely distributable graphics, sounds and music
• framework for custom (user) written AIs
• zooming further out in the normal view and zooming out in the small map

Lots of effort has been put into making OpenTTD easy to use. These include:

• convert rail tool (to electrified rail, monorail, and maglev)
• drag&drop support for almost all tools (demolition, road/rail building/removing, stations, scenario editor, etc)
• sorting of most lists based on various criteria (vehicle, station, town, industries, etc.)
• mouse wheel support (scroll menus, zoom in/out)

Posting a full list would be futile as it would mean updating this page almost daily, and even then some things might be forgotten. Play with the game to experience all the features yourself, or take a look at the Wiki for a more thorough listing and explanation of the features and possibilities available.