We want to have leaderboards that display a players stat for the past 30 days (e.g. players wins in the last 30 days). So if a player played for 35 days, the stats from the first 5 days wouldn't be included. This would go alongside our lifetime leaderboard so would be in its own dedicated stat (e.g totalwins - for lifetime, 30daywins - for wins in last 30 days).