XMASS is a single phase liquid xenon detector primarily aiming to detect dark matter particles. Total mass of the detector is about 850 kg and surrounded by 642 low background PMTs. The amount of the lights detected is 14$¥sim$15 pe/keV. XMASS is sensitive not only to nuclear recoils but also to e/$¥gamma$ signals.
Results on searches for the low mass WIMPs by a modulation analysis and for other dark matter candidates will be presented. Those searches based on the e/$¥gamma$ signals demonstrate the diversity and advantage of the XMASS experiment.
The sensitivity of the future detector, called XMASS1.5 with 6 ton total and 3 ton fiducial mass, will also be discussed.