This is my first post, but here it is:
There are 1 or 2 players per each team, depending on the number of players in total, and they are the "double agents." The first 5 minutes is a normal game, like ctf or tc, but after 5 min, there is a beep, or a signal. After the signal, the "double agents" can now either turn on their team, or continue ally with the team. At this point, each player has only 2 lives. After the game ends,the "double agents" are exposed and the game restarts.
Note-The double agents can only kill their team with a spade.
Note 2- The other team can still kill the double agent even though he killed his own teammates
Note 3- Players can teamkill, but after killing 3 players without killing the double agent, the player must spectate until the game is over
Note 4- If all the double agents are killed, then the game still continues until everyone dies, but the agents are exposed.
Note 5- There is instant respawn, and spectating is only for players have all their lives spent
Note 5- You can spectate players on the other team as well
Note 6- you can't chat while spectating.
How do you think?