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Rating Newest Oldest. Best Answer: Xbox Live time stacks up to 36 months worth. The only times they don't stack is in the cases of trial amounts, like 48-hour cards, or the free month offered to the first 3 new Xbox Live accounts made on a system. Source(s): Personal experience.
Prepaid codes for Xbox Live Gold trial subscriptions included with games or console bundles. Some games or console bundles may include a prepaid code for a 2, 3, or 14 day Xbox Live Gold trial subscription. This trial subscription starts as soon as you activate the prepaid card. The following limitations and restrictions apply to Xbox Live trial subscriptions from games or console bundles: