Jammin' Jars 2 plays out on an 8x8 grid where winning combinations form in clusters of 5 or more matching fruits touching horizontally or vertically. When a cluster pays out, winning symbols disappear via a collapse feature, allowing new symbols to drop into the gaps. Wild jar symbols substitute for other symbols and carry multipliers that can boost cluster wins. Players can also collect gold vinyl symbols during the base game to fill a meter and unlock higher levels.

Reaching the max level gives players a chance to trigger the Giga Jar bonus round, which removes regular symbols and introduces instant prize blocks. The slot features high volatility, meaning wins can be substantial but may occur less frequently. It suits players who enjoy dynamic gameplay with progressive mechanics and bonus features.