• The schedule of Steam Summer Sale 2021 leaked online 
  • Apparently, the big sale is happening this week
  • Based on the leak, this year's Steam Summer Sale has a murder mystery theme

The highly anticipated Steam Summer Sale 2021 is set to begin this Thursday and Mystery Cards have been uncovered, confirming this year's sale's theme.

American video game developer, publisher, and digital distribution company Valve normally does not announce its next Steam sale ahead of its schedule. However, thanks to an email sent to developers and clues discovered in the Steam backend, gamers now have an idea of what to expect in the upcoming event. Steam Summer Sale 2021 is reportedly scheduled to start on June 24 at 10 a.m. PT or 1 p.m. PT and will run until July 8.

The information came from the Steam Database, which shared the details about the schedule of this year's Summer Sale on Twitter back in April. Apart from this, SteamDB recently shared that it has uncovered the mystery cards in the Steam backend, which seemingly confirmed the theme of this year's sale. So far, there is no indication of what those cards would be for.

Valve changes revenue sharing policy for developers on Steam. valve

However, based on how they worked in the previous sales, gamers would most likely use them for spending certain amounts of money during the Summer Sale. These cards could be a quick way for them to earn some incentives for their next purchase on Valve's video game digital distribution service. Some fans believe that these mystery cards back the rumored murder mystery theme of the sale.

Last year, the Steam Summer Sale had the Summer Road Trip theme, and the year before, it had the Grand Prix theme. Through these themes, Steam users can unlock different kinds of cosmetic items, chat emojis, collectible trading cards and other items they can use to customize their profile. The first-timers with Steam Summer Sale can check out last year's best deals to have an idea of what to look forward to when this year's sale starts.

It is worth noting that the Steam Summer Sale only runs for a couple of weeks. Users must be ready when the big deals start to drop. It is one of the company's biggest sales of the year along with other seasonal sales. However, since these details are not official yet, fans should temper their expectations.