The game is identical everywhere. What differs by country is access, payment and the legal position — and those are the parts worth checking.
Gambling is prohibited under Pakistani law, and online play sits in a grey area enforced inconsistently rather than clearly permitted. This page describes how the game works; it does not advise anyone to play, and the position should be established independently.
Plinko runs in a mobile browser without installation, which is how the great majority of play happens. Local wallet services are the common deposit route, and the same caution applies as anywhere: establish how withdrawals work before depositing.
A ball falls through pins into a slot carrying a multiplier. Rows and risk level shape the payout table; neither changes the return. The chance of the headline multiplier at sixteen rows is roughly one in sixty-five thousand — the odds page sets it out in full.