I have played the alpha and beta on PS4. I have not preorder the game yet and yes it is true you have to preorder to have gotten a beta key. I guess I got one because I signed up for alpha. It is actually a fun game, very much like halo more so than call of duty. The gear system is pretty nice too, but I have watched reviews and read reviews that alot of the raids for the end game is tough. You have to have at least six people you know or game with to run them. There will be no match making as are in some MMORPGs. But overall pretty fun game. The PvP is ok, nothing too exciting; all I played in PvP was a game like domination like in CoD. You use the same character in the campaign mode as in the PvP mode. Its really fun to play with friends, you can play campaign mode with them. One thing though, it was the beta but the game got abit repetitive as in the surroundings. Of course you were just on earth so what can you do right? You could only lvl up to lvl 8 in the beta. Theres alot more powers and upgrades as you rank up. Plus there is no set class like in a MMORPG, so there is no tank or dps or healer and anything in between. I will probabaly preorder it to get some of the preorder stuff, but at a later date, still have a month to go before launch.