itch.io

Same stuff, just live some life and u won't notice as time will come with release:D

Here's the thing you have to understand, 

The bigger the game is, there's more bugs to consider about.

More features = More time needed to implement it + Figuring out and fixing the bugs

Therefore deadlines are just an unrealiable way to measure time in game development, or more accurately, in any kind of programming projects.