Cosmo Mines are enemy space thunder mines that appears in both Bosconian, Blast Off, and Star Ixiom that are useful to defend main base from distracting invaders. In Bosconian, Cosmo Mines only serves as a slightly greater danger because they explode when hit. Whether the explosion was caused by youe shot or a collision, the explosion could also kill you if you get caught into it. Once destroyed, they don't repopulate the space they were in until the next stage proceeds, so you could clear a good swath of space, and it'll remain cleared. In Blast Off, the Cosmo Mines appear if you miss a Spy Ship. Cosmo Mines explodes into eight bits of Razors; they're worth 100 + 400 for your score.