Sin Slayers is an RPG with roguelike elements set in a dark fantasy world, where your choices determine how challenging the fights and enemies will be. It's an indie game developed by goonswarm and published by Black Tower in 2019. Create, equip and lead a team of heroes.
The game is very lightweight to run; all new laptops can play Sin Slayers.
The RAM requirement of 4gb is easily met, though 2gb is enough to meet the minimum requirements.
Also, note that at least 1gb of hard drive space is required.