DRM-free online game seller GOG.com says that it is working hard to be ready for the upcoming release of Windows 10, which is slated for the end of the month.

“We’re getting ready for Windows 10 and putting our QA Team at full capacity to test the games we (and you!) are looking forward to play on the upcoming OS,” GOG said in a blog post. “Currently, we are very optimistic about July 29th and hope you will make a near-seamless transition to gaming on the newest version of your Windows operating system.”

New operating systems are notoriously bad at supporting games developed for older systems, which is one of the main problems GOG (formerly called Good Old Games) was created to solve. A large proportion of GOG’s game library is dedicated to old titles that are no longer supported by modern operating systems, and the game seller adds built-in emulators to get the games running on newer computers.

“This is the smoothest transition to a brand new system that we’ve ever worked on.”

“So far, things are looking great,” GOG said. “We’re encountering very few problems and most of those are either resolvable on our end, or likely to get fixed as Windows 10 nears release. In fact, many games that had issues on operating systems newer than Windows XP once again won’t suffer any hiccups on Windows 10.”

They added, “The OS is still a work in progress, so while anything can happen until the release date we’re confident for the future. This is the smoothest transition to a brand new system that we’ve ever worked on.”

That is good news for many gamers who might be reluctant to upgrade to the new OS for fear that it would break some of their older games.

“Really happy to see GOG spearheading this campaign,” said one Reddit user. “I wish other online storefronts had the same rigor of testing on each major OS revision and posting explicit ‘will run/won’t run’ labels on older titles.”

GOG notes that “some games may need a patch to run perfectly smoothly,” but they will all be available for download from its site as they become available.

Screenshot via GOG.com