Hole.io

Hole.io runs on the same "grow by consuming" tension as the wider .io genre, but replaces cells or snakes with a literal hole swallowing an entire city street by street, small objects first, then vehicles, then eventually other players' holes if yours is big enough.

Because size determines what you can and can't swallow, clearing every small object in an area completely before moving on tends to grow a hole faster than skipping around chasing bigger targets you're not yet large enough to consume. Once your hole is large enough to threaten rivals, sticking near their path rather than avoiding them turns their growth into yours the moment you catch them. Paper.io 2 runs on a similar risk-to-grow tension with territory painting instead of consumption.