Looking for optional gamemodes

Hi im looking for some gamemodes that work with a freeroam server and dont affect the main gameplay.
what i mean is optional gamemodes that are intiated with blips or commands like [Release] Timetrials - Standalone Races and Leaderboard [v1.00] and [Release] Grant Chasing Auto [Alpha 7.0] UPDATE 03-24-17
i am looking for a cops vs robbers gamemode, battle royale and demo derby but open to any that work.