Rebel Uprise is a 1v1v1v1v1 gamemode where you have a limited amount of units.
The more money a player gets by killing stuff or holding the middle the better units you get.
Last player alive wins the game. Extra units can be bought with hijackers or reoccuring units with saboteurs. Fill up the houses on your given island with the amount of flags at that specific house/unit you want to buy to get it on your main island. Hijackers are earned every 500$ you earn saboteurs are gained every 1500$ you earn.