Rock of Ages features a chronology which spans across five time periods: Ancient Greek, Medieval, Renaissance, Rococo and Romanticism. 'War' features two players attempting to break each other's castle gates, whilst 'Skee Boulder' requires players to race down a lane hitting targets before landing in a skeeball-style board while attempting to land their boulder in the target with the largest score multiplier. The game includes a story mode, which is loosely based on the myth of Sisyphus and features various stages, boss levels, and several multiplayer modes. The player wins if they can break through the castle gates and place his boulder in the center of the castle, killing the opponent. Once the boulder hits the gate, or their boulder breaks after taking too much damage, there is a small recharge period before another boulder can be launched. If players have enough points, they can equip their boulders with power-ups, such as armor or magma, which enhance a boulder's defensive or offensive capabilities, though they will lose this power up if the boulder takes sufficient damage. When ready to attack, the player can take control of a boulder and roll it down the hill, avoiding obstacles in order to attack the enemy castle's gate. The player can only add obstacles on green colored landscapes, which turn unusable when obstacles or money farms are planted on top of them. Players can also plant money farms in order to raise the funds needed to use certain objects.

Players can use a variety of obstacles to defend the path leading up to the castle, such as buildings, dynamite, windmills and animals. Players must use a large stone boulder to attack an enemy's castle at the bottom of the hill, while using various defensive structures to defend their own castles. The game combines tower defense strategy with a rolling ball mechanic similar to games such as Marble Madness and Super Monkey Ball. This screenshot is taken from Rock of Ages' Renaissance-themed setting

Rock of ages game