Going to 1.8m is going to be be slow it seems, the pledge dropped to an hourly low (less than 2k/hours) after reaching 1.6m, but we are going to get am update tomorrow (so say Sawyer on the official forums) so it might pick up again.

It also have over 40k backers now. Just last week Planetary Annihilation, with "only" 44,161, backers made $2,228,344.