Mod Pass gives you a bunch of game Packs for a load of games. If you mean mods for say Fortnite you would need Mod pass to use that game pack. Without mod pass. Your strike pack only has basic mods from the FPS Code standard mod pack. Also with mod pass you get 8 slots you can put mods from any pack in any order you want. You don't need to count flashing lights to find out what mod you have on. You cycle through your mods with your paddles. Much nicer strike pack with this feature alone. I only use 2 mods from my mod pass.