"Trainz-build" tag

Trainz build is the numbering system allocated to each released version of Trainz. Content may be created for different versions, making use of the newer functions in a more recent release. Consequently, some assets will not function in earlier versions of the simulator.

It is important for assets to list the version of Trainz with which they are compatible. For older Trainz builds, this is done by entering a Trainz-Build number in the model config.txt file. Content Creator Plus will automatically add the correct trainz-build to the config.txt file.

A correctly-constructed asset built for an older version will usually function in a newer version of Trainz, but this is not always guaranteed, as there have been amendments made to subsequent versions. (TBD: List of known breaking changes.) A model using the latest functions will not work in an earlier version. The Download Station identifies which version of Trainz you have installed and when you use the Content Manager, it will not allow the download of a more recent model that is incompatible with your version.

The approved Trainz-Build version numbers are as follows:

trainz-build	First Trainz product to support this content version
1.3	Trainz SP3
1.5	Ultimate Trainz Collection
1.6	Ultimate Trainz Collection SP1
2.0	TRS2004
2.1	TRS2004 SP1
2.2	TRS2004 SP2 - Passenger Pack
2.3	TRS2004 SP3
2.4	TRS2004 SP4
2.5	TRS2006
2.6	TRS2006 SP1
2.7	Trainz Classics 1&2
2.8	Trainz Classics 3
2.9	TS2009
3.0	TS2009 SP1
3.1	TS2009 SP2
3.2	TS2010
3.3	TS2010 SP3 / TS2009 SP4
3.4	TS2010 SP4
3.5	TS12
3.6	TS12 and Trainz Simulator Mac

Trainz-build numbers up to and including 2.8 are considered obsolete as of September 2012 and should no longer be used. See the Trainz Life-Cycle Policy for additional details.