I've only played two computer games obsessively, and that's enough to make me realize I shouldn't take up the hobby again because of the risk they'll become time wasters. In the 80s I played Gyruss, a shoot-em-up with a spinning space ship that I liked in large part because of the soundtrack - Bach's Toccata and Fugue in D minor. Here's a You Tube demo clip of the game. (This is the arcade version, not the Commodore Amiga version that I played. The music sounds a little different from what I remember.) There are all kinds of cool remixes of Toccata, by the way, most famously by the group Sky with John Williams on guitar. And just thinking about that has sent me to Amazon to purchase Sky's second album.
The other game was Sim City - my love of this game is probably related to my childhood obsession with Lego bricks. I love the way the game "plays itself" once you've zoned areas for construction, and you can sit back and watch the buildings pop up all over the place.
These days MCP and I are into the much more social hobby of playing strategy board games with friends. A current favorite is Ad Astra, in which you explore planets, collect resources, and build space ships and colonies. I'm a sucker for cute little game pieces - here are the ones from Ad Astra. (Of course, the cuter the pieces, the more expensive the game.)
From L to R: space ship, colony, factory, terraformer