One button, one gap, one honest way to fail - that's the entire pitch of a good flappy-style game, and Etpaf keeps a shelf built around titles that don't try to complicate it.

The lineup runs from helicopter-flap variants with slightly floatier physics to underwater swim reskins, extreme-mode versions with narrower gaps, flappy-fish takes on the formula, and straight bird-flight throwbacks. Every title is played through a fair number of attempts before it's added, mostly to check the tap response is instant rather than a frame or two late.

Everything runs on HTML5, so a run starts the second the tab opens - the tap or click response feels identical whether it's a phone screen or a mouse click.

Etpaf is funded by advertising, not a subscription, kept online by people who'd rather beat one more personal best than build a paywall around a single tap.