3 options:

• EXT4 (works in other OSs with aditional software)
• NTFS (works in other operative systems)
• ExFAT (works in other operative systems)

Some:

• Stardew Valley
• It Takes Two
• Divinity:Original Sin Saga
• Trine Saga
• Project Zomboid

dupeGURU or AllDup

unRAID is simpler and easier to manage than TrueNAS but requires a license:

• Basic (6 disks) = 53,10$
• Plus (12 disks) = 80,10$
• Pro (unlimited disks) = 116,10$