I have forgotten a PC game name. Could you help me?

[Blaga]

I played some time ago two games with the same name. First one was "Game name", second "Game name" 2. First one was with robots. You had a hero robot that could generate some workers and basic stuff and had a powerful attack. Then the worker generated other bigger workers that could generate better buildings and units. You could build metal extractors that were used for generating stuff. You could generate at some advanced time in the game stealth bombers that couldn't be shot down from the ground. You could build towers of different sizes. At the end of the game you were on a metal planet and could have placed metal extractors anywhere. The second was with 4 heroes, each with an element: earth, fire, water and air. The earth hero had the ability to raise dead units right after they died(from their bones) and had a special attack like an earthquake. You had special nodes where you placed mana extractors. You could've summoned a dragon as a supreme unit. The water hero, that looked like a naga(mermaid body, serpent tail) could swim through water and build on water. Some other thing that stood up in these games were that: units upgraded(even towers) when enough experience was gathered (they became bronze, silver or gold, becoming stronger and tougher each time), with ranged units you often could shoot at units before they entered visual range by clicking on the red dots on the map. Please, can anyone remember the name of these games?