These are super simple, they relate directly to a horror-themed game, they look great, and they call for candy. Keep in mind these are pretty strong (the T-virus calls for Everclear, which legal in some states, but not all), so don't down too many of these. You may want to offer them only at the beginning of the party to keep the party pace steady and your bathroom vomit-free.
Drink 2: The 1UP mushroom
Midori doesn't sit too well with everyone, but an easy-to-recognize green drink is too good to pass up. Shake things up with a cherry or cinnamon liqueur instead of Malibu to create a red mushroom drink, or go with Jagermeister or blackberry liqueur for a poison mushroom.
Drink 3: The Crimson Omen
This complicated cocktail is inspired by Gears of War. The good news is it's not nearly as strong as the previous shooters, so you can make it in batch form and then parcel it out as individual shots or blend it with about half a 2-liter of club soda to form a punch bowl of the stuff (adjust cheerwine proportions to taste).
Make use of these ice trays for actual ice, or use them as a mold to pair with a basic jello shot recipe.
ProTip: Don't drive drunk and don't let your friends drive drunk. If a party-goer seems drunk, take his or her keys and tell them they can have them back when they can beat Mega Man 4 on Hard mode. By the time they're sober enough to do that, they'll be legally able to drive.
Snacks: Not for the vegan, unless you like veggies
Serving liquor without food is in poor taste, even if you're not a gamer -- so have snacks at the ready. Gamer Grub isn't going to fly here (unless you like scrubbing orange-and-brown puke out of your carpet), so try these suggestions to keep your guests happily fed.
Snack 1: Pizza