Browsmos is described as 'is written and designed by Stephen Eisenhauer, inspired by an award-winning game called Osmos, which is made by Hemisphere Games'. There are more than 25 games similar to Browsmos for a variety of platforms, including Online / Web-based, Android, iPhone, iPad and Android Tablet. The best alternative is Agar.io, which is free. Other Browsmos like games are Slither.io (Freemium), Osmos (Paid), Thrive (Free, Open Source) and Diep.io (Free).
Fight other flowers for garden dominance. Florr.io is an online game produced by Zeach. It contains a rectangular map (garden) of increasing difficulty and enemies that you can fight to get special types of "petals".