D3 Publisher's recently released CUSTOM MECH WARS for PlayStation 5 and Steam is a game in which players complete simple campaign missions to find mech parts and progress the story. Teaming up with friends and showing off your custom mechs is half the fun, but multiplayer isn't available at the start. We'll tell you how to unlock co-op and how it works.

Japanese publisher D3 Publisher's Earth Defense Force series has always provided addictive co-op thrills. Now D3 Publisher (which has apparently been bought by Bandai Namco) has unleashed an exciting new title on PlayStation 5 and Steam called Custom Mech Wars. This one lets players design wildly inventive custom mechs and then tackle missions together in 4-player online co-op. Yeah, that sounds a lot like EDF but with even more mechs!