Ya'll should check out Battle for Wesnoth. It's free, has relatively good art/storytelling/music, tons of campaign content, and a great amount of tactical depth. The tutorial is rather adept at getting you into the game mechanics quickly and is actually a good amount of fun. It's a good game to boot up for a romp through a scenario or two when the P99 grind sinks in a bit too deeply:
https://www.wesnoth.org