X-Wing vs. TIE Fighter is the followup to Totally Games' previous X-Wing and TIE Fighter space combat sims. Upon launch it did not feature a single player campaign, but the expansion pack, Balance of Power, introduced more content. XvT is primarly a multiplayer pvp game, but there are a number of historical battles included that can be played single-player or multi-player. XvT's graphics are greatly improved from the previous games, but the updated 1998 versions of each actually used XvT's engine, so you won't see a sizable difference between those.
Like all of Totally Games' Star Wars space combat sims, XvT is quite challenging, but extremely fun. Gameplay controls are almost identical to those of TIE Fighter and X-Wing, and also to those of X-Wing Alliance. XvT's training missions are based off those from TIE Fighter, except you can fly any ship you desire through any mission.