Indie is a budget, not a genre, and the reason the label is useful anyway is that small teams take the risks large ones cannot. Most of the mechanically original games of the last fifteen years came from three people and a good idea.
Whether the one idea is strong enough to carry the whole game. Indies do not have the resources to hide behind production, so the design is exposed — which is exactly why the good ones are so good.
A single mechanic taken as far as it goes, and a runtime that stops when it is done.
Small teams that made something the size of a studio game and did not compromise on it.
Games made because nobody was making the thing any more, so someone did it themselves.
Self-published or published without a large publisher's money. It says nothing about the size of the game, which is why Hollow Knight and a two-hour art piece sit under the same label.
Constraint. Without a budget to hide behind, one idea has to carry the whole thing, so the idea has to be good — and a small team can commit to something risky that a large one would sand down.
Hades if you want something with hooks, Hollow Knight if you want something enormous, and Journey if you want to see what two hours can do.
Start from something specific rather than from the genre:
Or by the machine you own:
Or start from a game you already love — every title we cover has a page of hand-written recommendations, and the best-games lists cut the same library by era, audience and mood.