Games Like Rhodian Exodus

Rhodian Exodus is a post-apocalyptic hex-based real-time strategy game that takes place after an arachnid attack destroyed all civilisation. Fortify one of the last surviving human settlements, gather resources, build and supply an armoured force to retake the land and destroyed cities from both the arachnids and rival human factions. And figure out ... where they came from.

And remember ... no matter what you've been told ... you can't shoot through walls!