a list seporated by 3
its a bit difficault to judge whats fun for people, theme / genre / Co-op / PVP
what i would suggest looking at first :
The Expendabros
Castle Crashers
Demeo: PC Edition - pass the mouse / multi mouse
Dungeon Defenders
Golf With Your Friends
Hasbro's BATTLESHIP
Keep Talking and Nobody Explodes - onbe person with computer the other with a paper/pdf manual
Left 4 Dead 2 - split screen with a few commands
Lego Games are all split screen from memory
Lovers in a Dangerous Spacetime
Monster Prom series
PlateUp!
Portal 2
Stardew Valley
Toybox Turbos
Trine Series
Unrailed!
Vampire Survivors - Co-op
Some other suggestions
BattleBlock Theater
Broforce (free version : The Expendabros)
Divinity: Original Sin 2 - Definitive Edition - in palce of baulders gate 3 (wait untill its on offer and reduced though if you want a cheaper option)
Don't Starve Together
The Escapists 2
Genital Jousting
Gloomhaven
Golf It!
Hacktag
Human: Fall Flat
Jamestown
Jackbox Party games - good with freinds im told
Lost Castle
Magicka
METAL SLUG 3
Minion Masters
Monaco: What's Yours Is Mine
Octodad: Dadliest Catch
Rayman® Origins
Streets of Rogue
Tiny Brains
Worms Armageddon
Moneky Island series - no co-op but could work through it togeather on the puzzles
unherd- no co-op but could work through it togeather on the puzzles
WE WERE HERE SERIES
seporate machines :
Amung Us
Factorio - runs on a potato so 2nd laptop.
Mindustry - you can get this free from developer website - a lighter version of factorio
OpenTTD
Final Fantasy ix - not PC