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WolfThunder
Since: Jun, 2013
Codric
Since: Aug, 2018
2019-11-22 14:14:30
It's a shot in the dark, but could it be Lock's Quest? It doesn't quite fit your desciption, but memories can get mangled over the years.

So, when I was little (think 2000s, around 2005 to 2010) I vaguely remember playing this game where you play as a monster that fights...I think they were robots? The robots were ruining the monster's home by polluting it and the monster has to fight them to save it. You mainly fight the robots to protect trees that art scattered around the area and the game has a top-down perspective