Check out Dying Light’s Half-Life, Mario Bros., and Left 4 Dead Easter eggs

Earlier this week, a new open-world zombie game hit the market, and developer Techland made sure to include homages to some of gaming’s biggest hits ever.

Dying Light puts you in a country overrun by the undead — but thanks to your character’s parkour skills (aka how he can run and jump all over the place), you have the capability dash right over the shambling biters. It offers plenty of things to do and exploring the world is fun, but that didn’t stop Techland from including a little bit extra. Gamers have already uncovered a few Easter eggs, and we’re gonna share them with you now.