I didn't realise how old this thread was While I still like my answer back in '15, and I'm still an atheist if I had to pick a standard religious belief, rather than generalised spirituality, I'd be Muslim if I wasn't atheist. My Muslim friends have tried and if anything they've defined a 'god' in probably the most 'okay, I can go with this' manner, but I'm just not there.
How is the God of Islam described differently from the God of Judaism and Christianity?
My understanding of Islam is very elementary, but if my knowledge is correct then Muslims worship the same exact God as the other two religions.
Well, in most iterations of Christianity, God is described as triune, which is considered shirk in Islam
The Islamic god also appears to be less personal than the Jewish one (at least in orthodox conceptions), which is why he can only be known from natural signs (and not represented in pictorial form) and spoken about in parables