Arrowverse executive producer Marc Guggenheim talked about how they are planning to top last year’s four-way crossover between “Arrow,” “The Flash,” “Supergirl” and “Legends of Tomorrow.”

In a recent interview with Entertainment Weekly, Guggenheim revealed that they are hoping to increase the emotional stakes and the emotional payoffs in this year’s crossover to outdo last year’s “Invasion!” “If we end up doing what we’re talking about doing, it’s going to be pretty cool,” Guggenheim said. “The crossover is always the most challenging thing we do, but it’s also the most fun. Every year we feel the pressure [to top ourselves]. I feel like each crossover has topped the previous one. Topping last year’s, that’s a high bar, if for no other reason than what do you do that’s bigger than aliens? We’ve got some very, very exciting ideas…. Very early on in the process of doing last year’s crossover, Greg [Berlanti] said there’s probably no way to get bigger than aliens, so the best way to make the [next] crossover especially epic is if you can’t increase the bombast, increase the emotional stakes and the emotional payoffs, so that’s a very oblique comment on where our heads are at for this season.”

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While “Invasion!” was dubbed by many as a four-way crossover, it — technically speaking — was just a three-way crossover, as the “Supergirl” episode wasn’t really part of the mash-up event. But for this year’s crossover, Arrowverse executive producer Andrew Kreisberg revealed that there are plans in place for the former CBS series to play an integral role in this fall’s superhero event.

“We’re hoping to do a true four-way crossover,” Kreisberg said (via TVLine) during a “Supergirl” screening last February. “The great thing about our dear friends at The CW and [network president] Mark Pedowitz picking the shows up as early as they did [is that] it has allowed us to start building the schedules for next season.”

More details about this year’s four-way crossover are expected to be revealed during the shows’ panels at the San Diego Comic Con next month. See Warner Bros. Television’s Comic-Con lineup in the video below: