Complex sentence: During the publication of Nintendo_Magazine_System--(Australia) (1993 til 2000), Nintendo ran party tours in conjunction with Toys "R" Us, these events were only promoted in Nintendo Magazine System and happened every two to three years.
Split into simpler sentences: During the publication of Nintendo Magazine System (1993 til 2000), Nintendo ran party tours in conjunction with Toys "R" Us. These events were only promoted in Nintendo Magazine System and happened every two to three years.