Can you play gta online without completing story mode?
Quick Answer
The provided evidence about Grand Theft Auto IV does not address GTA Online, so it cannot be determined from this source whether story mode completion is required for online play.
Explanation
The verified evidence provided discusses Grand Theft Auto IV's single-player story mode, including its protagonist Niko Bellic, Liberty City setting, and open-world gameplay. However, there is no mention of GTA Online, which is a separate multiplayer component released as downloadable content for GTA IV. Since the source material does not cover the online mode or its requirements, it is impossible to confirm whether completing the single-player story is necessary to access GTA Online. Additional sources would be needed to answer this question accurately.