I'll take TSW as an example. When there is 4 people, the timer should start counting like usual. But at 6 people, it could be lowered to 1 minute, at 8 people 45 seconds, at 10 people 30 seconds, and at 12 people (full) the usual 15 seconds.
For a game like MurderMystery, it could be like: 3...