The UFO games are going to have to be your call. I've only played the demos but they all seem like competent squad tactical games, but nowhere near XCOM. They all have the ugly bland 3D graphics we know and love from earlier this decade. I believe some of the older games have a couple of good unofficial mega patches that may not have carried over to the latest, so that's at least some reason to go for the pack rather than getting the latest one used or something.
Also, I was going to jump on Fantasy Wars (or get it from Newegg for the same price) but then I realized I just slogged through King's Bounty and would probably kill myself if I had to play another hex-based unit level fantasy strategy game. This comment was edited on Jun 10, 2009, 13:54.