Very nice!
It sounded to me more like a mid level pianist improvisation, no "wrong" notes, uses of 7m chords, I minor - V minor progression (correct me if I'm wrong) and motifs line, also I heard one cluster in the good context.
It's nice scoring a video game, personally I'm composing music's for an Unreal Engine actionrpg with online features, it's a really solid game and team.
Wish you good luck!
Violon Noir