portal multiplayer mod
i got an idea for a portal multiplayer mod.
first you have to click find partners; then you have to choose between 3 modes;
2 players, 3 players, and 4 players. then it will start searching.
it will try to find people who search for the same mode.
then you decide (with the others) wich map pack your gonna play(every mode has different map packs and of course you can download map packs 
) you play as a robot(the two co-op bots from portal 2 and 2 others that i still have to design).
There's already a Portal: multiplayer mod.
srry how can you delete posts
yes, but is it with multiplayer maps?
Both multiplayer maps and the original maps.
is it in this site
I have actually seen a few attempts of making a portal coop/multiplayer-mod.
This one seems to be the most promising one:
http://www.moddb.com/mods/portal-multiplayer2
Also you can search Google and Youtube for "Portal Multiplayer" and find some more stuff.
Plus--just to stick this in here so you know, redneck--any multiplayer modifications would be harder than mapping. Since Portal is singleplayer, you would have to pretty extensively rework code so that MP would be reasonably stable. We currently have no access to Portal's code. Therefore, MP Portal is pretty much impossible without recoding every other aspect of the original game. This is what Portal: Access All Areas--and a few other mods, apparently--are attempting to do.
Now with 100% more inline comments!
Correct me if I'm wrong but I don't think I am, they're just using the built in server-side plugin capabilities of Source. And since clients are 1 player servers, they're using that to cheat at things like artificially increasing maxplayers and creating additional clients. HL2:DM server ops do stuff to increase the max players from 16 to 32, which I used to do on my HL2:DM server.
It's all super hackish and I imagine it plays like shit. Just wait 4 months for proper Co-op.
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It's a code mod it isn't built off Portal. Portal crashes if maxplayers is larger then 1.