Hold the line
against the rolling rocks
A co-op 3D tower defense game for up to four players. Build towers, pool your money and smash boulders and gems before they roll through.
Break rocks together
Every rock you break splits into smaller ones, so each wave needs a plan, and a team.
Rocks that split
Boulders and gems roll down the lanes and crack into smaller pieces when they break. Clear every last chunk before it reaches the end.
Co-op for up to 4
Play alone, with up to three computer partners, or online with friends through Game Center. Everyone shares one pool of money, so plan together.
20 towers
From the Miner Pick and Crossbow to the Tesla Coil, Railgun and Meteor Caller. Upgrade speed, range and damage to suit each map.
13 maps
Green Meadow to Glacier Gorge, each with its own lanes, cliffs, trees and rocks that block your towers’ line of sight.
Leaderboards & achievements
Every map tracks rocks destroyed, money earned and money spent, on your device and on Game Center. Unlock 25 achievements.
iPhone, iPad and Mac
One purchase covers all your devices, and Family Sharing is on for every item.
Frequently asked
How much does it cost?
Boulder Breakers is free to download, and Green Meadow and Mountain Pass are free to play. A one-time Full Game purchase unlocks the other base maps and online co-op. There are optional map packs and cosmetic skin sets. Everything is a one-time purchase: no subscriptions, no consumables and no ads.
Can my friends play if only I bought the game?
Yes. If anyone in a room owns a map or the full game, everyone in that room can play it, so one owner can host friends who have the free version.
Do I need an account?
No. Single player works right away with no sign-in. Online co-op, Game Center leaderboards and achievements use your Apple Game Center account.
What devices does it support?
iPhone and iPad with iOS 18 or later, and Macs with macOS 15 or later.
How do I get help or report a bug?
Go to the support page and email us.
Ready to break some rocks?
Boulder Breakers is in final preparation for the App Store. Check back soon.