Creating unified inter-portal rules.

I suggest a compromise between 4 and 6 minutes: We play with a 4-minute time limit, but each player has the option to load their autosave N times (for example, N=3, or possibly N can be discussed before the game...) and continue playing (like taking an extra minute in the game, similar to "What, Where, When"). Since when loading their autosave, the 4-minute countdown restarts...