does not support windowed mode (or I did not find the option. extensively modified GUI - that's a matter of taste, but it can be modified to match your personal needs + toool for automatic conversion of add-ons available (B.O.R.A.T. + more eye-candy than any previous version + supports 2.3.0LE mods with the addition of LE2BB93 + it has all the base 2.2.1MWM features(read above) + no conversion of add-ons needed (except you want to stick with the catalog-structure of MWM) no migration-tool for add-ons from other versions available does not support 2.3.0LE-add-ons natively + opponent-races or races against the clock on several addon-tracks not compatible with add-ons for other versions bad gfx-performance (compared to other versions) + all javas available (this only counts if you want to mod javas yourself Lets start with the versions of the game - thanks to onedownone2go In this guide i will explain all the basics on SLRR(street legal racing redline) modding like how to install cars, how to install parts, how to find errors and which version to choose from.