Hard Rock Mine is an official map for the Gem Grab event. The map has a Brawlidays version named Ice Block Rock.
The map has an open center and two H-like bushes that span the width of the map. The side bushes are closer to each other than the bushes in the center. In the center are four three-tiles worth of bushes and walls which Brawlers can use to defend themselves. The horizontal pathways in the center top and bottom are narrow and are blocked off completely on one side by a 2x3 wall. The map is diagonally symmetrical.
- Heavyweights and other short-ranged Brawlers should sneak in from the side to stop enemy Brawlers from heading directly into action. They should ideally use the left lane as the right side of the bushes is blocked off from the main strips of bushes.
- Control-based Brawler are great on this map as you can push the opponents back to their spawn for the whole game with the horizontal strip of bushes on their side.
- Using her Grow Light Gadget, Rosa can connect the bushes on the left and right to create a ring of bushes around the middle. This can allow close-ranged Brawlers such as Bull easier passage to the enemy side, or it can allow her to continuously dominate the borders while constantly healing when paired with her Plant Life Star Power. Although, be wary because your opponents could use it to get to your side unnoticed.
- Sharpshooters and throwers are very weak and vulnerable on this map to heavyweights. Use medium-ranged Brawlers instead.
- Brawlers with a considerable amount of spread are also great for keeping the center in check as well.
- You can use the right lane to charge your Super and leave once it's charged. Unless you go around the 2x3 wall, you won't be able to do much more than this. Brawlers that may need to do this to charge their Super consist of medium-ranged Brawlers including Mr. P and Sandy.
- Rico is an excellent lane Brawler on this map due to the number of wall segments on either side, allowing for multiple bounces, especially with use of his Super Bouncy Star Power.
- 8-BIT and/or Pam are great for this map because they can place their turrets behind the small groups of walls to provide prolonged support to teammates. However, beware of wall breakers or throwers.
- Sprout also does very well on this map because it can block the major chokepoints, which can be game changing. The bushes on each team's side of the map support its Photosynthesis Star Power very well.
- On 14/6/17, Hard Rock Mine was added to the game.
- On 5/12/18, Hard Rock Mine was widened by 4 tiles.
- On 23/10/19, the environment of Hard Rock Mine had changed from the Mine theme to the Mortuary theme.
- On 11/1/20, Hard Rock Mine was featured in the January Brawl Stars Championship Challenge as a Stage I map.
- On 9/5/20, Hard Rock Mine was featured in the May Brawl Stars Championship Challenge as a Stage I map.
- On 8/8/20, Hard Rock Mine was featured in the August Brawl Stars Championship Challenge as a Stage I map.
- On 21/11/20, Hard Rock Mine was featured in the Brawl Stars World Finals 2020.
- On 17/3/20, the environment of Hard Rock Mine had changed from the Mortuary theme to the Mine theme.
- On 20/2/21, Hard Rock Mine was featured in the February Brawl Stars Championship Challenge as a Stage IV map.
- On 15/3/21, Hard Rock Mine was featured in the Season 1 Power League as a Gem Grab map.
- On 7/4/21, Hard Rock Mine was once again featured in the Season 2 Power League as a Gem Grab map.
- On 16/6/21, Hard Rock Mine was once again featured in the Season 3 Power League as a Gem Grab map.
- On 16/7/21, Hard Rock Mine was featured in the July Brawl Stars Championship Challenge as a Stage II map.
- On 25/8/21, Hard Rock Mine was once again featured in the Season 4 Power League as a Gem Grab map.