.S2A File Extension
What is an S2A file?
Application run by SEAL2, a graphical interface for DOS; similar to an .EXE file for Windows but is an executable application for SEAL instead; cannot run on a traditional operating system such as Windows or Mac OS X.
Example application files included with SEAL2 are calc.s2a (similar to the Windows calculator program), explorer.s2a (the file and folder browsing application), and sol.s2a (the game of Solitaire).
NOTE: SEAL only runs in DOS. If you don't have a version of DOS, you can use a DOS emulation program such as DOSBox to run SEAL.