- UDK (Unreal Engine 3) → yes it’s free Unreal Engine 3 Features - Unreal Engine
- UE4 → no, you have to pay 19$, but you can unsubscribe + you will be still abel to use the engine
Take a look at the “What is UDK?” tab → last line (Get UDK February…) 
Also make sure to check the UDK forum: UDK - Epic Games Forums
I had heard from a famous youtuber that anyone can download udk for free. I made a free account but I am just a normal person im not looking to publish a game to make money, I just want to try and gain the experience and if I would happen to make a good enough game I might still not sell it. I just wanted to try something that I thought was a free gaming program. I was really interested and thought this would work but I really don’t want to pay or buy anything right now till I know for sure that this is the right kind of program. I am a student but im in a graphic design major and ill also be graduating this spring so I don’t think the education thing would work. I just basically wanted to know if there is a free version for people like me to try and not sell I but just have fun a experiment with it.
please help and thank you. I just really wanted to know.
ok that would be fine but how do I get that free version? when I go to the link or that page I don’t see any options of a download unless its hidden somewhere and im not looking in the right place? im sorry if this is a common question that had to be answered im just lost I guess and new to it all
O.o ohhh … thanks I think I got it? I clicked "Get UGK(Feb. 2015 ect.) hopefully that was the one if not then oops but thank you so much you made my day 
its installing right now (UDKInstall-2015-02.exe) so hopefully it right .SO EXCITED!! Thank you again.