PLTK (also known by full names Polska Liga Tetrisa Klasycznego and Classic Tetris Poland League) is an online competition organized by Polish Community since 2021.

PLTK consists of two multi-tier league systems independent from eachother – in Winter and Summer PAL League has it season. In Spring and Fall, players play NTSC.

PLTK consists mainly of Polish players. The competition is open for non-Polish players as long as they have Polish heritage or live in close countries with community still in development. Thanks to that, players from Visegrad Group, Baltic States and Ukraine can freely play in PLTK.