Co-op tetr.io

[marsh heath]

(Just delete it if its in here somewhere, i couldnt find it in a search tho)
Simple, two players per matrix. Matrix is the same size as two joined together)

Sort of ties into team modes I guess. Tetris Ultimate apparently had versus mode support for 4 players on this, but it doesn't need to be versus, could be something to play with a friend instead of the solo modes.

In Tetris Party, both players had free range of the entire 20x20 matrix, while other games including Tetris Ultimate and Tetris GIANT (arcade) each player was restricted to their side of the matrix, with two colums in the middle shared between the two. In Tetris Effect players dropped their pieces in sequence in the connected matrix. the other games had simultaneous play.

Tetris Party also divided the pieces between the two players which forces some cooperation (dunno if I like this aspect or not). In this image, the player on the left only gets OJL the other player gets SZT and both get I, though peices can change sides via Hold, since hold is shared (again, not sure if I like that part or not)

(Hudson held a high score competition for co-op mode, and because of this, while you could play with an AI partner, the AI goes full derp once you reach a certain level to prevent players from likely achieving a high score without an actual partner- so I never really got to truly experience it)

[river galleon]

https://youtu.be/lBEEYJ_3L60
Don't forget about my boy TGM

[marsh heath]

Ah nice, I've only played TGM3 which I don't think has that?

[hallow portal]

1. impossible to manage with ping to share board — definitely SOLO mode.
2. but you can't really use single keyboard to bind two TETR.IO controls
3. idk but it might be not able to support multiple input device neither because it is browser based

[marsh heath]

1. I think it would work fine just based on my experience with the game., though any connection issues would really hurt playability
2. there's more than enough keys on a keyboard to do this, but you can also just use controllers or a keyboard and a controller like I already do
3. you can already put in inputs from controller and keyboard at the same time or any combination of keys on the keyboard at the same time. Two player games played on a single keyboard were common in the early days of the PC

Tetr.io supports pretty much any gamepad type input device you can plug into your PC and use with anything else

Local 2player (or by yourself if you're really crazy enough) would work, but I think it would be very possible to make it online playable.

[hallow portal]

mmmm ok acceptable

[marsh heath]

But this game really could use something you can do with friends. Teams is a hot debate but this would do something for the limited non-versus experience available in the game right now

[tiny crystal]

It's been done ina semi recent tetris game, Tetris effect has a similar mode (idk if I can link it) https://youtu.be/v6_kLREd-rs

[hallow portal]

there's no problem with te:c connected style co-op

but this is not that

yea

[marsh heath]

yeah i thought of connected as well

i pointed that out in the OP

as noted, in that game, when the fields are combined, you take turns with piece placement

other iterations the play is simultaneous

[hallow portal]

the biggest problem there is only one person can place blocks at one time

[marsh heath]

thats what I just said :p

[hallow portal]

h

[marsh heath]

in TGM's doubles, tetris party, and tetris ultimate, it's simultaneous play

(ultimate kinda sucks, you only get 1 next peice)

[wide oriole]

i feel like i ought to mention https://www.juststack.net/ also does this realtime

[wide oriole]

yeah lol you'd need several people to really test but it's connected the entire time through

[ruby glacier]

Doubles exists in TGM3, but you can't play it by normal means, only by hacking. It's in a rough state

[neon beacon]

doing this with netcode is tough

im sure thats also why TE:C's connected mode is turnbased

making something like this not break down with a combination of fast play & network lag is a tough one

in most games, rollbacking makes minute differences, because movement tends to be smooth

but in tetris movements are atomic

rollbacking atomic actions is very unenjoyable

[marsh heath]

TBF: IN TE:C you can see the other player's peice shadows to cooperate on the piece drops. You just can't drop the piece til it's your turn

[hallow portal]

that's what we call turn based

i mean it's co-op it is normal to see other's piece

[marsh heath]

What I mean is there is still network data flying around from every user, i.e. its tracking your inputs and sending them

because we're talking about the netcode/network challenges that would arise from something like this being online

[wide oriole]

well players can easily drop packets and lag for a while in TE:C without interrupting gameplay, that's why when the boards are connected none of the active pieces intersect like they do in TGM doubles/just stack

[proud pilot]

I remember a racing game where it just doesnt check colision, basicaly it's singleplayers but you can see where other players are, this way makes it so that you dont have people complaining about network lag and such

[marsh heath]

That may be why some versions limit players to their side (except for an overlap in the middle) to minimize that?

[lucid moon]

the main problem is probably what if 2 players try to hard drop at the same time, you see your piece drop first but which one is actually there

[proud pilot]

I think turn base is the way to avoid that

[marsh heath]

the problem is the way I see that it really slows the game down waiting for the other player

though with tetrio having no delays good players could still go pretty fast

[proud pilot]

i mean

in TEC connected mode

you can still move your piece and soft drop

you just cannot place the piece until it's your turn

[hallow portal]

you got the right point, you cannot place the piece until it's your turn

[marsh heath]

I can see how taking turns does avoid some potential issues, but if we saw something like this I think it would be a lot more fun if it was fully simultaneous

[proud pilot]

actually, now that i think about it, since this feature request is about co op and not something like teams mode, maybe it should be more about cooperation, so simulaneous would make it more fun when you and your friend hard drop at the same time

[wise spruce]

this would be quite fun

would want to play

[lucid moon]

if both players actually want to go fast, they will definitely be able to

[marsh heath]

now dont get me wrong, I would like to see some kind of team based thing (non specific about the form it actually takes) but something like this requires just 2 people and it would be easy to invite a friend to and you could compete for scores on it like solo modes

[marsh heath]

it did occur to me that now that we can set board sizes, we can replicate the 20x20 typically seen in co-op modes, just not actual coop :p

[marsh heath]

somewhat related to this, has local multiplayer features ever been considered? Given that you can connect controllers and also use the keyboard

[tender fog]

A teams-like co-op mode could be pretty cool to have alongside the character system, maybe two people playing different characters could swap in and out to take advantage of both abilities

[river galleon]

Given TETR.IO is a mainstay at Tetris LANs now, it'd really hurt them to not do that. But depending on what's on their docket might mean we don't get that for a good while (which I'm honestly fine with; I don't think enough LANs and local games happen enough to warrant top priority)