Microtopia: help robot ants expand!
An automation game
Mindustry: Base building and tower defense gem
12 Games To Play If You Love Factorio
Fakutori, a laid-back, colorful automation game with optional story, releases demo on Steam
Factory Idle, a browser game
Plan B: Terraform, a planetary colonization and terraforming automation game, where cities develop independently, releases it's 0.9.1 early access patch (0.9.x saves are supposed to work on release)