There was never really a single game. First game: Grand Prix on Atari 2600 Then The Settlers, Desert Strike, Another World and Lotus Turbo Challenge 2 on Amiga. Age of Empires 2, GTA, Stronghold, SHOGO, Morrowind, BG2 on PC After these titles I can try just about anything. That made me consider really wide variety of genres, styles and publishing formats (from indie to AAA).
About Maps, same here. Even looked into paid alternatives, and… There’s not really much of value. I’m disappointed.