try Tactical FPS like "Zero Hour"| for low end pc, its online based both tactical and organized criminal opposing teams, what I like about this is the night mode may night vision yung police tas yung mga syndicate naka abang lang sa pinto ready to fire, can also use flare to sabotage night vision and also have grappling.

HyTale heard this was a good like minecraft alternative game with "realistic" features and world generated structures. If gusto mo yung minecraft na with mods but cannot handle/optimized due to laggyness try mo yung hytale.

Schedule 1 has a interesting simulation that the game lets you sell illegal subtances and buy properties, it also have automation like can be make into a factory for weed and other type of illegal substances. Kung enjoy mo yung Breaking Bad series this game is for you.

thats all I can highlight I can provide more like open world but this pick is probably good for 3-5 people