Despite being nearly a decade old, I still enjoy playing Defense Grid, a tower defense game that largely defines the genre for me. Here is a video of me just this week completing the final story mission without losing a core – it only took me several years!
Ever wondered how things would be if you were just a single cell, living a simple cell life? Floating around, absorbing your smaller neighbours, desperately avoiding being absorbed by your larger neighbours? Well wonder no more, as that is exactly the theme behind Osmos, a vaguely physics based puzzler, that aims to be relaxing, but often ends up exceedingly frustrating.
Velocibox describes itself as a hardcore twitch-heavy endless-runner. That is definitely all true. After a couple of hours of play I have reached level 2 once (getting through level 1 takes seconds if done correctly). This game requires the reflexes of a fighter-pilot! It is super-hard. It is also well-designed and easy to just keep playing.
Artificial Defense is a fun stylish orbital shooter with some tower defense gameplay. Developed by a solo-dev, the game shows a high level polish with tons of nice little touches. It is a pretty and fun game that can keep players entertained for hours (as I have).