Re:How is this different? (Score 1)

EULAs have never shown to be legally binding.

This is wrong they have been shown to be legally binding. See ProCD, Inc. v. Zeidenberg, 86 F.3d 1447 (7th Cir. 1996); Hill v. Gateway 2000, 105 F.3d 1147 (7th Cir. 1997); and the Uniform Commerical Code (UCC) Sections 2-204 and 2-606(1)(b) and 2-602(1).

1- Minors can't enter into contracts. Can only people 18+ buy games?

This is also wrong. Minors are able to enter into agreements - however, the common law defense of minority allows them to void and "walk away" from agreements they have entered into. Some limitations apply on this right to void.

Contract laws require that you actually receive something in exchange for what you are offering.

True, sort of, for common law contracts - often termed 'consideration' and thought of as a promise exchanged for a promise - it is the presence of consideration that makes the contract enforceable. However, in software licenses and computer sales the UCC applies, not common law, which has different rules for contract formation, offer and acceptance, and remedies among other things.

Now I really need to get back to studying for my law school final exams - I have one in only 3 hrs - yikes.