Now, for those of you have been gamers for ten years or more, the name 'XCOM' may bring up fond memories of mashing at your keyboard, screaming in frustration because the aliens just threw a grenade right into your gigantic clump of troops on the first turn.
If you're an utter newb, anyway...
Anyways... for those of you who know of XCOM (or would like to learn), Steam has the complete series up for a mere 15$ total. I haven't mentioned it to you guys in the last few days (hence costing you 10$ because I grabbed it at 5$ total, sorry) because I've been busy... ah, 'testing' the compatability fixes they applied to XCOM Apocalypse -- I can get the first two working via DOSBOX myself, but I never managed to get a decent run of XCOMA since I stopped using '95 -- something like 10 years ago. I got it kinda-sorta working under 2000 and XP, but only kinda-sorta. Now, Steam is selling a 'fixed' version (some tweaking required: they include a .iso file for a CD image that you should open up and copy files out of to turn the install into a full install to avoid intermittent errors and being unable to use utilities like XED to fix the INSANE base starting designs) that works under Vista (again, some tweaking required -- go to program files\steam\steamapps\common\xcom apocalypse, find the 'dosbox.conf' file and chage output=surface to output=ddraw to avoid possible graphics corruption issues).
These games are incredibly fun, if a bit frustrating for a new player. They harken back to the 'good old days' of gaming, where games actually CHALLENGED you. Even on Easy, XCOM and TFTD are very difficult -- but quite winnable.
And at 15$, can you afford not to try it out?