The Race-Swapped campaigns bring a twist to the original StarCraft II campaigns. You go through the same missions, but you play as a different race. This implies changes to the units and structures that you get, different music, dialogues and difficulty-appropriate balance changes.
There are also 2-player coop versions of these campaigns, so you can experience the campaigns with a friend. The coop versions feature many changes, such as player skins, announcers and chat commands.
Gameplay Trailers
1A) Wings of Liberty: Protoss Edition: https://www.youtube.com/watch?v=NES00WsAsO8
1B) Wings of Liberty: Protoss Edition COOP: https://www.youtube.com/watch?v=0Zit8rIgOZs
2A) LOTV: Terran Edition: https://www.youtube.com/watch?v=xA5m_vM43HY
2B) LOTV: Terran Edition COOP: https://www.youtube.com/watch?v=6TSgEX6DDfs
3A) Kerrigan Covert Ops (NCO as zerg): https://www.youtube.com/watch?v=rjaBRmIy2z8
3B) Kerrigan Covert Ops COOP: https://www.youtube.com/watch?v=lns0STeT8Hc
4A) Protoss Covert Ops (NCO as protoss): https://www.youtube.com/watch?v=Jp7vYI_NxP8
4B) Protoss Covert Ops COOP: https://www.youtube.com/watch?v=Srso6ymkTxg
5) Wings of Liberty: Zerg Edition: https://www.youtube.com/watch?v=v9Tz6BrogmQ
6) Heart of the Swarm: Terran Edition: https://www.youtube.com/watch?v=4rcZcqU01XA
7) Heart of the Swarm: Protoss Edition: https://www.youtube.com/watch?v=HjFkmZeE0CM
8) Legacy of the Void: Zerg Edition: https://www.youtube.com/watch?v=TnAQ33Vt5Lg