The game's Battle Of Endor expansion allowed you to murder many beloved Star Wars characters (plus the Ewoks), and Han's death scene features the same style of execution, the same lightsaber color, and even the same disturbingly orgasmic death face as in The Force Awakens. You can see the full scene here, but be advised about watching more from that game, because if this trend continues, you may get spoiled on how Leia gets killed in a double lightsaber duel.
Now let's look at Han's killer, Kylo Ren -- who, in a plot twist, turns out to be his emo son Ben.
That's what you get for naming your kid after some crazy old guy you barely knew.
Kylo wears an outfit suspiciously similar to the one worn by another character from a Star Wars video game: Darth Revan from the Knights Of The Old Republic series. As with Kylo, Revan's identity is revealed in a plot twist -- he's actually the player.
Kylo started out as a Jedi apprentice before turning over to the Dark Side, but he still feels conflicted about it. The same goes for Revan, whose final Dark/Light affiliation depends on how much of a dick the player chooses to be in the game. Even Kylo's Starkiller Base, which drains energy out of a star in order to function, is reminiscent of Revan's Star Forge, which works the same way. Shame on you for thinking they were just ripping off the Death Star.
In fairness, Knights Of The Old Republic was also ripping off the Death Star, because it seems that's the only idea anyone has in the Star Wars universe.