premise: Wings of Glory is a World War I combat flight simulator video game for MS-DOS, developed by Origin Systems and published by Electronic Arts in 1994. The game uses Origin's RealSpace engine, which was first used in their earlier flight simulator "Strike Commander".
hypothesis: Strike Commander is the first in a series of flight simulator games.
reason: There is no correlation between Wings of Glory and Strike Commander, but the context does not provide whether or not Strike Commander is part of a series or if it is a standalone title.