SNK now sells Metal Slug X , 3 , and the Metal Slug XX (HD version) individually on Steam. While the exact "Complete" bundle is not on Steam, you can buy the via emulation or the ACA NEOGEO series.

, often directly behind the disc holder or on the back of the instruction manual. Digital Purchase (Steam/GOG) : For digital versions like the Metal Slug Complete Bundle Metal Slug Tactics , the "serial" is provided as a digital CD key

The "New" version includes:

Your nostalgia isn’t worth a ransomware attack. Play smart, play legit, and keep running and gunning the right way.

Which are you using (Windows 10, 11, etc.)? Is your copy a physical disc or a digital download ?

This compilation requires proper licensing of the original arcade and console releases. Some handheld or region-specific ports may be excluded depending on rights. Verify included titles on the storefront listing before purchasing.

Here is what actually happens when you download those: