Age of Empires III: Definitive Edition is a fun RTS. Historical Battles are a highlight and it's an easy game to grasp for newcomers with tutorials and the Art of War mode. However, bugs, lack of variety and a grindy level system hold it back.
BPM: Bullets Per Minute is a fun shooter with some interesting ideas but with a difficulty curve more akin to trying to ram yourself through a brick wall. If you're a fan of the roguelike genre and rhythm games, provided you can get past the annoyances, then this could be a fun time killer.