DALEKTRON is free to download and play.
It is only available for Microsoft Windows and you can get the setup program here:
Please Note: James and I assert that the program is free of spyware or malware of any kind. There is a network option in the game and if you choose to enable it it will send information about your scores to the global high score server here at DalekTron.org. We guarantee that the information sent contains only information about the games you play together with a unique numeric code that identifies you to the server.
PLEASE DO NOT DOWNLOAD THE GAME FROM ANY OTHER SITE AS WE CANNOT GUARANTEE THAT THE PROGRAM YOU RECEIVE WILL BE THE GENUINE UNMODIFIED ARTICLE AND THEREFORE SAFE TO USE.