Square Enix: Tomb Raider 2013 is a Pre-Order Bonus for PSN Release of Rise of the Tomb Raider
Square Enix is currently having an offer for NA PSN where if you pre-order Rise of the Tomb Raider for the PS4, you get a free digital copy of the original Tomb Raider: Definitive Edition. I think this is a great deal considering the original 2013 Tomb Raider game is a solid game.
You can buy it by clicking this link.
Source: Square Enix Press Release