Agar.io - The smash hit game! Control your cell and eat other players to grow larger! Play with millions of players around the world and try to become the biggest cell of all!
ANNO - ANNO is a city-building and economic simulation video game series, with real-time strategy elements.
Slither.io - Slither.io is a multiplayer online video game. Players control an avatar resembling a worm, which consumes multicolored pellets, both from other players and ones that naturally spawn on the map in the game, to grow in size.
Stronghold - Stronghold Crusader is a RTS game from the series from Stronghold.
Osmos - The full game includes 47 levels (plus "infinite" bonus content) across 8 distinct level...
The Settlers Online - The Settlers is a free web browser based strategy game along with a gameplay that drops anywhere between Age of Empires and the online strategy style.