There's all sorts of reasons that you might miss out on a crowdfunding campaign. Didn't have the money at the time. Set a reminder, but missed it. Weren't sure how well the whole campaign would do. Well, it's often not all over when that final counter clicks down to 0. There's the Late Pledge phase, which is where Infinity Deathmatch: TAG Raid is right now.
From the announcement:
The day has finally arrived, we are opening the Pledge Manager!
Time to add every item to your cart and close your purchase!
And if you didn't make it in time to contribute during the campaign, you can still get your copy of Infinity Deathmatch: TAG Raid!