Fightng the Venom

Spiderman: Fighting the Venom Idea
A Spiderman game where he has to choose three endings, one where he slowly becomes Venom Spiderman Carnage or where he fights it off while fighting multiple villains. Green Goblin and the relationship with Harry, Mysterio and the Silver Cat. Or maybe without the Relationship stuff that would probably tie he game story down.

Its a dark arc in a Spiderman comic series for a Good or Evil choice video game like InFamous, it would start off with Peter being infected with the Space Venom disease from Spiderman 3. During the story arc he fights and battles some of his villains and in conflicted at various points to let the aggressive and ruthless venom pathogen take over.

In a video game, resisting the venom would lead to Peter ultimately rejecting the Venom then it attaching itself to another organism like Eddie Brock Jr and letting the venom immediately take him over. He'd become a complete Venom monster. So You'd have to use the Good Skills against it like advanced dodging, faster spider sense, whatever. However if you choose to let the Venom take over you and become Power Hungry and a Savage out of Control Beast, all the Spidey villains that you sided with will turn on you.

The thing with games though its usually a cosmetic change when you decide to be good or evil, all the moves are the same but one move is executed with nice noble light blue or white aura whilst the evil is usually just blood red or black. So I suggest those that choose the Dark / Evil route will have stronger Base Stats like Strength and Speed and Aggressive Power Attacks whilst those that choose the Light / Good route will have more specialised skills like Dodging and Counter Attacking skills.

So a Good Ending would result in a Fight with Venom which is basically what Peter would've been if you had chosen to be evil rather then good, so its like fighting your shadow. He uses all the Venom Carnage Moves against you so it's a cool fight. The Evil Ending will just be Fully Powered Carnage Spiderman versus the other Spiderman Villains one by one in a City Wide Gauntlet of Boss Fights.

However if you stay manage to stay on a neutral path you should probably get an ending where Spiderman fights the remaining Super Villains that he didn't outright kill or eliminate and one of the bodies of one of the defeated super villains after the fight gets some of the rejected symbiote of Venom and becomes a Weakened version of the Venom you would normally fight in the Good Ending so a Neutral ending is a bit of both endings.

Should think this through harder.