With a month to go before the massive E3 video game trade show, some potential announcements may have been spoiled by a retailer leak. A series of big-name video game sequels, some of which were previously unannounced, popped up on Walmart's Canadian website Wednesday morning and brought to the public's attention by a Twitter user. At the time of writing, the listings are still visible on the website, though they could get taken down at any moment. Each game's retail page is accompanied by a black, placeholder image instead of actual box art. Some of the titles, like "The Last of Us 2" and "Final Fantasy 7 Remake," were previously announced and could have major presences at the upcoming E3 trade show. Major video game companies will get together in Los Angeles in June to announce their newest, biggest upcoming releases.