Life is just a big game we are all playing with ourself.
No. that's not a misprint: "Ourself". Singular. And actually the converse statement is also a part of this point of view:
Life is just a big game ourself is playing with us.
We, of course, are many (at least 5 billion human, and who knows how many other, consciousnesses), but ourself is only one.
A really fun part of the game is that we are really ourself, and ourself is really us!