Multiplayer side scroller games for PC/Windows with 2-player local/couch support

Blip & Blop: Balls of Steel

Players: 2 local, 0 online

CounterAttack: Uprising

Players: 4 local, 8 online

Super Hydorah

Players: 2 local, 0 online

IRONCLAD

Players: 2 local, 0 online

Caveman Warriors

Players: 4 local, 0 online

Lil Tanks

Players: 2 local, 0 online

Shock Troopers: 2nd Squad

Players: 2 local, 0 online

Blazing Chrome

Players: 2 local, 0 online

Not Dying Today

Players: 4 local, 0 online

Cyber-Lip

Players: 2 local, 0 online

Spinmaster

Players: 2 local, 0 online

DAMNOSAUR

Players: 2 local, 0 online

Top Hunter: Roddy & Cathy

Players: 2 local, 0 online

Psycho Soldier

Players: 2 local, 0 online

Brotherhood United

Players: 2 local, 0 online

Gunslugs

Players: 2 local, 0 online

Thunderflash

Players: 2 local, 0 online

Action Fist

Players: 2 local, 0 online

Savage Halloween

Players: 2 local, 0 online

Get Me Outta Here - Deluxe/Remastered Edition

Players: 2 local, 0 online

Gunslugs 2

Players: 2 local, 0 online

Operation Hardcore

Players: 2 local, 0 online

Ghosts 'n Goblins Resurrection

Players: 2 local, 0 online

OZARK

Players: 2 local, 0 online

Re:TAKE

Players: 4 local, 0 online