In brief: Gear up for a blast from the past – well, nine of them, to be exact – with the latest offer from Humble Bundle. For a limited time, the digital storefront has nearly a dozen classic first-person shooters up for grabs. All have been remastered by Nightdive Studios, the Washington-based developer best known for its work on the System Shock franchise.

The Fully Loaded bundle is offered in multiple tiers, starting with a four-pack that includes Blood: Fresh Supply, Turok, Sin: Gold, and a 10 percent off coupon for PO'ed: Definitive Edition – all for $5. For an additional $5, you can add Forsaken Remastered, Turok 2: Seeds of Evil, and Doom 64 to the mix.

The nine piece dinner priced at $15 additionally includes Powerslave Exhumed and Rise of the Triad Ludicrous Edition, and for five bucks more – $20 total out of pocket – you can add Turok 3: Shadow of Oblivion Remastered to the bundle.

All games in the Fully Loaded bundle are redeemable on Steam. None of them should give modern systems any trouble (Sin: Gold calls for a Pentium 166 with 32 MB of RAM, for example) but if you are gaming on a really old machine, it might not be a bad idea to skim over the system requirements of each title before pulling the trigger. The most demanding game looks to be Doom 64, which calls for an Intel Core i5-750 CPU, 8 GB of RAM, and a GTX 660 / R7 240 / Intel HD 530 graphics.

A percentage of your purchase will go to help Humble Bundle continue to offer additional bundles in the future. The rest of the money goes to charities and developers – either through a default split or adjusted as you see fit.

Nearly 17,000 bundles have been sold as of writing, raising over $41,000 for Active Minds, which supports mental health awareness and education for students. The offer expires later today, so the clock is ticking.