GameStop’s latest "Buy 2, Get 1 Free" promotion is offering up great discounts on some of the biggest games and systems on the market. Every so often, GameStop has special offers and giveaways in order to clear its excess inventory, many of which coincide with November’s Black Friday holiday. The most recent of these promotions included pre-owned copies of hit PS4 and Xbox One titles like Marvel's Spider-Man: Miles Morales, Red Dead Redemption 2, and Halo: The Master Chief Collection alongside an assortment of used consoles and accessories.