I have been getting some rather negative feedback on This is Infinity, and after letting one of my friends test it, I can see why. The game is incredibly difficult until you get what the objective is.
My original intent was to try to let the player experience something that felt alien, and at first incomprehensible. Then they would feel a cool sensation when they figure out what was going on.
The problem is that the game doesn't have a fixed difficulty curve, you actually start out with a very large chance of entering the most difficult area of the game first. This area is on the verge of being too difficult even played after getting through half of the game, and certainly not a good starting point.
Therefore I think it might be good to give some further instructions as to what to do. However, I do think the game is more rewarding if you have some patience and try to figure out the objective on your own. So if you want to have the most interesting experience possible with the game, have some patience and try your best to figure it out on your own. If not, here's an explanation of what you need to do:
To summarize the game: Find four portals, figure out what to do after you enter each portal, then figure out how to get to the end. The objective in each area is fairly simple, but because of the way the game is presented it can be hard to figure out. Observe the elements you see in each level to get a clue to what is actually going on, and you'll probably be able to beat the game relatively quickly.
If that's not enough to get you through the game, here's a walkthrough.