With one exception, these are flash games.
Click here to visit Kongregate, where most games are hosted
These are at least 8 years old by now, I can't guarantee they still work like they used to.
Inspired by the Xyth Eras storyline, this was my most popular game.
Click here to visit Steam, where the game can be played for free.
Click here to visit the Google Play Store, if you wish to play HD3 on Android devices