Story of a Gladiator is an arena beat 'em up where you take the role of a man in search of his destiny. It's an indie action game developed and published by Brain Seal Ltd in 2019. Fight against waves of enemies in the arena to earn coin and fame until you are strong enough to enter the colosseum and become champion.
The system requirements are lightweight; nearly any new laptop will work for playing Story of a Gladiator.
The RAM requirement of 4gb is easily met.