I think it's obvious God, as depicted in the Bible, exists. Here's the evidence.
1) In the beginning, God created the heavens and Earth. If it wasn't for God, we couldn't be here. The Earth is just in the right spot so it's not so cold we freeze, or so hot we burn.
2) And only God could've made everything in the first place. Something can't come from nothing. Scientists agree the universe had an origin, so what? Did the universe create itself, when it didn't even exist to do so? No, God created the universe, making sure everything's fine tuned so we could prosper.
3) God is the maximally greatest being (MGB). It's possible he exists in some possible world, therefore he does exist in some possible world. Since he exists in some possible worlds, and he's a MGB, he therefore must exist in all possible worlds, therefore our world.
There's more out there, but I'll stick with these three. Good luck refuting them, Athiests! I'll be ready. [There's a generous 24 hours per round, and 7 voting days like Genesis.]