Skipping some obvious ones like SMB/Tetris.
From top-left to bottom right:
- Punch Out
- Bio Miracle Bokutte Upa (Famicom Disk System)
- Gun.smoke
- Bubble Bobble
- Dragon Quest III
- Volleyball
- Pinball
- Mighty Bomb Jack
- Lifeforce
- Double Dribble
- Bionic Commando
- Lifeforce (sorry duplicate)
- Nekketsu Kouha Kunio Kun (Famicom)
- Balloon Fight
- Ice Hockey
- Super Dodgeball
- Soccer
- Double Dragon II
- Dragon Spirit
- Jackal
- City Connection
I love same-screen coop games. Too bad they aren’t popular any more after the 8-bit and 16-bit era.
It’s amazing how few great couch co-op games there are these days.