From Sonic Retro
|First seen: Sonic the Hedgehog (2006)
|User: Rouge the Bat
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When climbing a wall, the player can press / to make Rouge place a pink heart-shaped mine on the surface of the wall. The mine will detonate a few seconds later, and the resulting explosion will destroy weak blockades to open new routes, or inflict damage on wall-bound enemies such as Egg Bombers. Rouge cannot place Heart Mines directly on enemies, so good timing is required when using them for offense.
|Sonic the Hedgehog (2006)