Hole
5 games
Description
Hole games invented a genuinely new idea: you're not a character, you're an absence. Everything you pass over falls in, and the more you eat the more you can eat.
Hole.io is the original and still the best of them, putting you against other players in a shrinking city where being biggest is the entire goal. Hole Arena works similar ground competitively, and Attack Hole points the mechanic at combat rather than scenery. Hole Puzzle is the thoughtful one, and Backyard Dig Hole 3D Simulator takes the word literally instead. The multiplayer ones are considerably more stressful than they look, since you're never the only thing growing.
There are 5 free games under this tag, all playable in the browser with nothing to install, and the multiplayer ones are considerably more stressful than they look.
The competitive end is .io Games, and Collecting Games covers the gathering side.