All 80 maps of the Sunbury Chambers series. The Series includes COOP and Single-Player maps as requested by multiple players. All maps having PeTI in the brackets had been created with the Ingame Editor. All maps missing the PeTI statement had been created

Selection of 484 Portal 2's chambers to play with friend (± 5.3GB). Based on the most popular levels (most played and liked) and also on the creators and levels most followed.

Collection of some really awesome coop map series Credit for all maps goes to their respective creator

Just some maps. (Mostly co-op) Around 11GB so not recommended to download all at the same time. Sub to an author, series or a small number at a time. Collection is sorted by author.

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A big list of Co-op maps for Portal 2

Lots More Portal Maps