Soon I'll be traveling and visiting family. I'd like to be able to hook my Steam Deck to their TV and let their kids have a rip at couch multiplayer games allowing up to 4 simultaneous players.
The good ole classic WiiU Mario Kart is there and been played until exhaustion by now, so I'd be happy if I had more titles (either SD-compatible or just plain emulated) at the ready if they wanted to try.
Keep Talking and Nobody Explodes (infinite player)
Magicka (4-player)
The various Jackbox Party Packs (players depends on which game. Most support 4 players, some up to 100 players, each player must have a phone to play on)
It's on sale for $3 right now. Awesome 4 player competitive racing game without split screen so everyone gets maximized view. Way different than Mario Kart so it won't be a repetitive experience for them. This is the Steam-based couch coop that's lasted longest in my friends group.
Tricky Towers
Tetris game, but the catch is you build upwards to a finish line and physics play a role, so the tower can lean and collapse.
TowerFall Ascension
Competitive platformer shooter. No split screen. One large screen for everyone. My favorite aspect is all the options you can change to switch up the gameplay. Coop mode and PvP mode.
Mount Your Friends
A personal favorite of mine. Not necessarily for kids, even though I don't think it's anything beyond maybe PG-13. It's hilarious. It can be pretty competitive. You can choose to build upwards or outwards. I think outwards is more fun. You can watch gameplay videos and determine if it's appropriate for the kids in question.
Others have pointed out games like A Way Out, the Trine series, and Split Fiction. Those are all great. But they're longer, story-based puzzle games that take more time than you may have for them to finish. Trine allows 3 players, but the others only allow 2.
Can second SpeedRunners. They've even announced SpeedRunners 2 recently. The only downside with the game is that when you master the mechanics in the game you can't really play with your friends anymore, unless they are also keeping up. But even then I think I played the game many tens of hours with my friends before I got addicted and got ahead of them.
I can confirm that Barony is a fun couch coop experience for two on a steam deck, so long as you are prepared to die and have to start over a lot. It might be tricky with four players, as there is a lot of inventory menuing. You might need a really large screen.
You're welcome, I'm glad to spread the old-school pre-internet local couch coop fun :)
My personal favourites are
MageQuit
This is the most addicting of all the played games. I bought this with a "fun little magic-based pvp-only game for now and then" mindest. I thought "super smash brothers but magic". I started playing it with my friend on his TV "just for an hour" and suddenly, it was dark outside and time to go home.
The next meeting we planned on playing MageQuit for a round or two and then move on to one of the other, yet unplayed, games. The moving on part never happened, MageQuit was just too much fun.
Lovers in a Dangerous Spacetime
This is the game for the whole family. You (up to 4 players) are in a spaceship. The spaceship has different buttons and levers in different places to control different things like acceleration, changing direction, aiming / firing weapon, directing partial shield or countermeasure etc. and you need to rescue your bunny-friends.
They are scattered around the levels, sometimes hidden, sometimes locked up, sometimes guarded etc and you need to work together with your teammates to direct the spaceship. You get quite a few different weapons and shields / countermeasures, which can also be combined, you upgrades for the ship, can buy different ships etc.
It looks and sounds adorable, but if you don't work together, it's way harder then it looks. This is a game with a campaign and story.
Regular Human Basketball
Think basketball, but stupid and fun. The regular humans are actually motionless robots which need to be moved by using switches and levers inside it, which is what your job is. You even have a jet-boost at some parts of your regular-human body. We laughed our asses off.
It is similar to Lovers in a Dangerous Spacetime in the sense that, you need to work together to control a bigger machine. This is just a pvp only game, no story or campaign.
Ultimate Chicken Horse
Race each other to the finish of an obstacle course. After each round, everyone picks a new obstacle to place and expands the course. Seldomly have I ever seen such bullshittery as my friends and me created in this game and then had to go through.
I know, right!? I haven't played it in a long time, but had tons of fun with it when I was. Great party game and especially great for people who remember what it was like playing split screen back in the day 😅
Agreed, although it's wise to have a backup option for this. It's entirely possible that you have two solid Portal players go at this, which should be a really fun romp. However, in my experience, any skill gap between the players usually turns every stage into "how do I carry my friend through this puzzle?" An extreme version of this can be seen in Game Grumps' playthrough.
Currently on split fiction by the same developers, it's amazing as well but a bit more challenging. A Way Out is also decent but we strongly disliked the end.
That's interesting that you thought split fiction was harder than it takes two. My partner and I thought the opposite, since split fiction seems to let you get away with skipping a lot of things when one of you is dying (i.e. checkpoint reached by one player counts for both of you). In saying that my other theory is my partner has actually gotten better at games since we played it takes two.
All Sonic Racing games (Transformed is the best one but sometimes gets confused with inputs, you may need to delete a config file once in a while but it's not a Steam Deck-specific problem)
SpeedRunners, Ultimate Chicken Horse, Duck Game, Towerfall Ascension, and Stick Fight are some of my favorites. Crawl is also really good, but a bit more complex so depends on the age of the kids. Also can never go wrong with a platform fighter, Rivals of Aether 2 is great.
It’s an amazing mix of aesthetic from Army Men: Sarge’s Heroes on the N64 and the Toy Story 2 Action Game with the PvP gameplay of the former and PvE gameplay of any famous shooter from the past 20 years.
To top it off, the level of detail put into every damn corner of the game is to die for. Customizable action figure player characters, all the NPC enemies are recognizable toys that react exactly as you expect (i.e. Beyblades that spin out into pieces when destroyed, and plastic soldiers that melt when shot with a flamethrower), and the environments are all lovingly designed and decorated. It’s the perfect modern couch-co-op game.
One of my favorite in-person MP games of all time is Towerfall Ascension. My family and I used to spend so much time laughing out loud while playing that game. So many ridiculous trick shots with all the power ups. I haven't tried it on Steam Deck, but I don't see any reason why it wouldn't work, assuming you can get multiple controllers connected.
A lesser known multiplayer game that's less co-op and more competitive fun is ultimate chicken horse. It's a super silly game where everyone compete platform style to reach the end of a stage, but each round everyone places another trap. It can get pretty funny pretty quick!
Recommend using the in game cheat to unlock all stages so there's more variety right away
Mount Your Friends is an Xbox 360 era go-to for me. Very easy to get into and gets people competitive (in a good way). The only downside is it's probably not the most appropriate game to play with kids for your situation
Been having a blast with Make Way lately, it's a top down racer where you start each round by building new sections of the track and adding traps to it. It's really chaotic and fun, and supports up to 6 local or online players
I had a blast playing Overcooked 1 & 2 with my partner and they run fine on Deck. I only played with 4 players once and it was a bit chaotic since it was the first time playing Overcooked for most of us.
If you plan on emulating Wii U, New Super Mario Bros. U sounds like a fun option. In the same vein, Rayman Origins and Legends are great co-op platformers too and are both Gold on ProtonDB
I would recommend Overcooked and Moving out, the kids i played this with picked it up fairly quickly.
Another good coop game is Unrailed, but it is more stressful and might be more frustrating.
Our most played game is ultimate chicken horse though, but its versus and does not really provide guardrails so you can kind of deadlock your match quite easily