What happy times we live in for fans of old-style X-COM, the way your Gollopmother used to make. The awfully X-COM-y Xenonauts left early access and launched properly only a fortnight ago, and now “open-source clone” OpenXcom has hit version 1.0 after five years of development (“This is your father’s X-COM” goes the tagline in an alternate universe with softer copyright laws).
It’s actually more of a replacement engine for X-COM: UFO Defense, mind, requiring the original game to drop in its data files. As well as improving the interface and fixing old bugs and whatnot, it adds mod support. And with that, you can keep playing new old X-COM for ever and ever and ever.