With Filestar you get 0 different skills for working productively with MSX Screen 3 Dump (.sc3) files.
About .Sc3
Name
MSX Screen 3 Dump
Extension
.sc3
Format
Binary
Category
Raster Image
Developer
ASCII Corporation
Description
A dump of the MSX Screen 3 graphics page, saved with the FE BSAVE header. An interlaced picture's second page sits beside it as .s15 to .s18. RECOIL decodes it.