Last weekend during its online QuakeCon event, Bethesda made the original game available for free via its launcher on PC. The promotion encouraged donations to charities like the NAACP Legal Defense Fund and the Trevor Project, and of course gave PC gamers a reason to save a couple dollars by installing and activating the game in the company’s launcher.

Donations to eligible charities during the event topped $30,000, so now the company is making Quake II available for free during a 72-hour period (started at 12 PM ET on Wednesday, you do the math). To get the game, all you should need to do is log in to the software during the eligibility period, as explained here. And then check back next week on the 17th, because Quake III Arena will be available for free in the same manner, saving you $3 or the time of finding an old CD somewhere just to relive the old days of FPS action.

• Fallout 76 – Up to 50% off

• DOOM Eternal – Up to 50% off

• The Elder Scrolls Online base game – 50% off (from 8/4 through 8/25 on all platforms except PlayStation, which will be from 8/5 through 8/19)

• The Elder Scrolls Online: Greymoor – 35% off

• The Elder Scrolls Online Crowns – 25-40% off

• Wolfenstein Alternate History Bundle – 60% off

• RAGE 2 – 80% off

• Quake Champions – Log in to Quake Champions on Bethesda.net or Steam between August 6 and August 19 to receive the QuakeCon 2020 Railgun and the Quake Champions Pack (permanently unlocks all Champions) for free

The QuakeCon event is also focused on raising money for charities, and if gamers top the $10,000 mark then you’ll also be able to get a free copy of Quake II later. You can watch the QuakeCon stream on Twitch for more updates, as well as info on giveaways and updates on the various tournaments taking place this weekend.

Of course, if you prefer more modern games, Bethesda has announced that Elder Scrolls Online and Doom Eternal will get free next-gen upgrades to their respective console versions. Also, for Doom Eternal the company announced updates on the way like “Invasion, more Master Levels, new playable demons in Battle Mode, competitive ranked modes and the first single-player expansion, The Ancient Gods, Part One.”

Check out the full schedule of events during #QuakeCon at Home! https://t.co/D36BckIRO1 pic.twitter.com/H3gXq6Gers

— QuakeCon (@QuakeCon) July 30, 2020

The requirement was ostensibly to reward members of Bethesda’s Doom Slayers Club for playing the original titles. While that’s a nice perk if you own the more recent Doom (or plan to get Doom Eternal), it’s a hassle if you just wanted a quick nostalgia trip.

There have been a few other complaints as well, such as the addition of copy protection, graphical changes (such as filtering that softens those 1993-era graphics) and apparent music tempo slowdowns on the Switch. That’s not including the removal of downloads for the old PS3 and Xbox 360 versions. It’s not a fiasco, but these clearly weren’t the straightforward ports some were expecting.

Quakecon 2019 is underway and one of the first big announcements from the event is that the first three Doom games are now available on PS4, Xbox One and Nintendo Switch. You’ll also be able to carry around the first two entries in the classic FPS series on your iOS or Android device too.

It won’t surprise you to hear that Bethesda is also using this as an excuse to slash prices on games that wouldn’t make much sense outside of QuakeCon. You can get the reimagined Prey and Dishonored 2 at 80 percent discounts, while Fallout 4 and its VR counterpart are both 75 percent off. And if you haven’t played Skyrim by this point, you can snag it or its VR edition at a 67 percent price reduction.

Yes, Bethesda is laying the groundwork for Doom Eternal, Wolfenstein: Youngblood and other upcoming games. This is still a good excuse to explore id’s back catalog, though, and might help explain why QuakeCon persists 22 years later.