See here one really big N-scale layout designed in SCARM, on which construction has already begun. [>>>] 
Here you can download the updated KATO N-scale Unitrack library for SCARM with added 3D objects for the bumper track end pieces. [>>>] 
Nice track plan with 3 independent lines, using KATO N-scale Unitrack pieces, designed in SCARM by Oleg Krasnov. [>>>] 
Here you can download the updated KATO N-scale Unitrack library for SCARM with all bridges and viaduct tracks included. [>>>] 
Here you can download the updated KATO N-scale Unitrack library for SCARM with the new turntable and access tracks included. [>>>] 
See one almost completed layout in N-scale, created by Didier Watson who used SCARM as base track plan design software. [>>>]