The largest space hog in GTA V is GTA Online, which includes dozens of DLC packs (Heists, Arena War, Cayo Perico, etc.). Lite versions strip all online assets entirely. You get Story Mode only – but that is still 70+ hours of gameplay.

Yes. If you want a light GTA experience without piracy:

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Because these installers are modified by unknown third parties, they are frequently used as "Trojan horses." Malicious actors embed cryptojackers (which steal your hardware power to mine cryptocurrency), ransomware, or info-stealers that harvest your saved browser passwords and financial data. Frequent File Corruption