I thought Cross was the sequel to Trigger :/
It's not a direct follow up. Instead we get this shit with fucking Serge traveling between 2 dimensions(Not a bunch of different time periods) with like a bazillion other people including the effimate Magus wannabe, the alien guy, a scarecrow, ect...
Didn't get too far because it didn't keep my interest, but I know it didn't follow up on Chrono Trigger. It's not a bad game, but imo would've been better if it was an actual sequel.