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MAPF9, Dual Fortress Zone, is the tenth Capture the Flag level in Sonic Robo Blast 2v2.1. It is set in a dark, rainy valley, with castles on each end serving as bases. It is one of the oldest CTF stages made for SRB2, having been featured in most SRB2 versions since Demo 4. It was removed in v2.0, but it was remade for v2.1, revamping the layout of the centerpiece and retexturing the whole stage.