I used to preorder a lot in the past, but I've realized it's not worth it until it's a game you're going to immediately play or you can get a good deal on it by preordering, because the games will drop in price within six months(took awhile in past gens like sixth and prior unless the game bombed.) Since I'm a member of Best Buy's gamer club unlocked I'll be buying day one more often since a $60 game now costs $48 new. Best Buy doesn't drop games in price as quick as Amazon and by the time the games start to drop in price on Amazon I'll have got a lot of use out of the ones I'm interested in playing.
Anyways, here's the games I have preordered.
Devil May Cry 4 Special Edition Asian Version for $39 after shipping on PS4. I want a physical release of this game.
Payday 2 Crimewave Edition for $19 on PS4(digital copy since it's pretty much online only, split the costs with a friend.)
Bloodstained Ritual of the Night for $125 on Kickstarter
Here's what I'm planning to preorder.
Nobunaga's Ambition
Uncharted 4
Dissidia
Earth Defense Force 4.1
Not sure about anything else right now. I have a huge backlog to play and some games aren't on my priority to play day one.
Etrian Odyssey Untold 2
Dungeon Travelers 2
Operation Abyss
J Stars Victory +
Tom Clancy Siege
Tom Clancy The Division