New GTA 4 mod entirely overhauls the graphics

A new graphics mod for GTA 4 is very likely to give iCEnhancer a run for its money. Called the Ultimately Beautiful Edition, this mod makes the game look better than any graphic mod launched till now.

Mod categories at Grand Theft Auto IV Nexus - Mods and community

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New GTA 4 mod entirely overhauls the graphics

An article on GTA4's character physics and why they're not more widely used : r/pcgaming