BOLT looks like Construct style and BOLT has good feature: "Super Units"
Just need "Super Units Library" like Construct 2's plugins, behaviors (Conditions, actions etc.)
There is another up and coming Asset on the asset store / also has a thread on the unity forums - called Game Creator that although not similar in the events system does provide their own event type system. Still early days but seems very promising after playing around with it a bit.
Add Trigger, Add Event, Condition and then Action.