What do you mean by you 'give' them the game? Are you shipping it to them? Or are you physically handing it to them?
To start with, only the buyer can initiate a chargeback. Paypal doesn't start one without a buyer making a claim for non-receipt or receipt of an item that's not as described. Your protections against that are these:
If you shipped it, you probably sold it online somehow. Your advertisement should clearly describe the item and its condition (new, used, and if used, any visible damage). This way the buyer can't come back and say that you never said. You should state your return policy. Then, when you ship, you track it and insure it and you SHOULD require the buyer to sign for it. This eliminates any 'I never got it' claims, because, should the 3rd party shipper you use actually lose it so that the buyer DOESN'T get it, you can issue the buyer a refund. You will be reimbursed by the shipper. There's no reason for a chargeback. If the buyer gets it and claims it's not as described, the buyer must follow your return policy and return the item to you. The buyer must prove to Paypal that they did so.
If you handed it to somebody who paid you with Paypal....number one, that's not very smart. You get cash. But if you took Payp[al instead...you don't hand the item over until they have signed a purchase agreement that spells out what they are buying, and that the buyer is accepting it in 'as-is' condition with no returns whatsoever. If they file a claim with Paypal, you provide a copy of that to Paypal and let them know that this was a private, in-person transaction. Paypal will never issue a chargeback in that situation.
If you sell and item. Customer cannot go back into your account to take money. Yes, a person could open a claim. This would imply that the value of the order you sold. That cash amount would be put on hold in your account. If you took the cash out. Your account would be in a negative. No money at present would be given directly to the buyer.
Claim is an opened case where you the seller must respond to the customer complaint. If item sold is per description and listing. Seller wins. If item not per description (listing) or not received. No coverage.
Less us be honest buyers are picky. You are best to check with buyer on being received, happy before you spend the cash....
1. You can't do an immediate transfer.
2. The buyer can do a chargeback and win.
3. Unless this is SIM City, you usually don't own the items you are selling.
They would have to contest it. In almost all cases the seller will lose. Yes, they will take the money from your bank account. The only way to defend yourself is to state your case.