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Quell Zen - the very embodiment of relaxing logic games - features over 200 beautifully crafted challenges.
Minimum
OS *: Windows Vista/7/8 Processor: 1.66 GHz or faster 32-bit (x86) or 64-bit (x64) processor Memory: 2 GB RAM Graphics: OpenGL 1.3 or higher Storage: 150 MB available space
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29 days observed