Guaranteed to make your playthrough of GTA IV a bit more interesting!
ChaosIV is a chaos mod for GTA IV inspired by pre-existing similar mods for V and SA. Once you start playing with the mod enabled, a random effect will trigger every 30 seconds. It could be anything from making all vehicles go at full speed, to replenishing your health, or even teleporting you inside the Statue of Happiness!

Installation
Ensure that you have an ASI Loader installed (xliveless for 1.0.7.0 and below, Ultimate ASI Loader for any version [rename it to dsound.dll]).
Additionally requires .NET ScriptHook: http://hazardx.com/files/gta4_net_scripthook-83

For Complete Edition, install this patch afterwards: https://www.lcpdfr.com/downloads/gta4mods/g17media/26726-compatibility-patch-for-gta-iv-complete-edition/

To install, unzip the ChaosIV.net.dll file and place it into the scripts folder within your GTA IV installation.

Source Code and Bug Reporting
See here: https://github.com/lempamo/ChaosIV