First Sword is developed with the Unity 4 engine.  It runs on Dell servers.  It is a true transplatform game and is played crossplatform on Android tablets, Android smartphones with ARMv7 and above, iOS computers, iPads, and iPhones, Windows XP, Vista, 7, and 8, and via Web browser.  Check this list to see if your device utilizes ARMv7 and is capable of running First Sword.