Multiplayer shoot em up games for Nintendo Switch with 4-player support

Mercenary Kings

Players: 4 local, 4 online

Quad Fighter K

Players: 4 local, 0 online

Aces of the Luftwaffe - Squadron

Players: 4 local, 0 online

Stardust Galaxy Warriors: Stellar Climax

Players: 4 local, 0 online

Jamestown+

Players: 4 local, 0 online

Xenoraid

Players: 4 local, 0 online

I Got Isekai'd Into a Shmup

Players: 4 local, 0 online

Rogue Robots

Players: 4 local, 4 online

B.Ark

Players: 4 local, 0 online

1993 Shenandoah

Players: 4 local, 0 online

PuPaiPo Space Deluxe

Players: 4 local, 0 online

Super Star Blast

Players: 4 local, 0 online

Overdriven Reloaded: Special Edition

Players: 4 local, 0 online

Toon Shooters 2: The Freelancers

Players: 4 local, 0 online

Dariusburst: Another Chronicle EX Plus

Players: 4 local, 0 online

Guntech 2

Players: 4 local, 0 online

Dogfight: A Sausage Bomber Story

Players: 4 local, 0 online

Hexapoda

Players: 4 local, 0 online

Astrosmash

Players: 4 local, 4 online

Operius DX

Players: 4 local, 0 online