I've been working on my new mod, Event Outbreak, but eventually got bored. I've decided to release what I've got so far. This version only has the event system, and doesn't have any unlockables.
The Event Balloons are available in the same categories as normal balloons and cost 1,000 simoleons. They allow you to run a variety of events, similar to what is described in Event Outbreak (http://zerbu.blogspot.co.uk/2014/04/event-outbreak-announcement.html).
If you have TestingCheatsEnabled on, cheat interactions will be available.
Please be warned that this is the first version. Please report any bugs if you spot them. Please also mention what time during an event (as it was starting, in the middle, etc) the bug occured.
I'm not sure whether or not I'll get to making the full version of Event Outbreak. Hopefully I will, but I'm not making any promises.