If you must download games digitally due to a lack of physical drives, rely only on well-known, community-vetted repack sites that have transparent track records. These legitimate repacks will still be several gigabytes in size, but they are guaranteed to be clean of malware. Conclusion

It is technically impossible to compress 15,000MB of high-quality assets, audio, and code down to 10MB while keeping the game functional.

Look for used physical PC DVD copies on reputable secondhand marketplaces like eBay or local gameshops.

Some highly compressed versions might require a crack to bypass activation. Be cautious and ensure the crack comes from a trusted source.

Compressing a game works, but it has limits. Even using professional tools, you might reduce a game's size by a respectable 50%. To shrink a 15,000+ MB game down to just 10 MB, you would need a compression ratio of 1,500:1 (i.e., the original file would need to be 1,500 times larger than the compressed version). For comparison, the developers of the incredible 64KB game "QUOD" achieved this by spending a decade meticulously crafting their own engine from scratch to generate content procedurally – it's not a technique you can apply to a pre-existing, complex game like FIFA 16.