No, it isn't. The event currency dropping on the outskirts is different in different cities. I've been verifying this for a long time and I'm pretty sure of it.
This is a constant regardless of the event type. There is nothing remotely different regarding the randomness of incident quality between the Buried City/Halloween, vs. say the Phoenix + Fall events, vs. the May & Winter shuffle board style events.
But good strawman!
Devs, please ignore this demand. Mini games make players waste their time with activities that have nothing to do with city building or city running. They only break people's concentration and cause them to squader event currency so that they will miss the final artifact and spend diamonds to eventually obtain it.
Oh, now I get it. (Not...)
Learn how the mini game works and how best to utilise your tools. If you need help learning how to best maximise your tools, then ask... there's plenty of Forge players about who've been playing this style of mini game for 3+ years and are quite adept at it. (...and I promise, we don't bite!
)
This event format is much
easier to gain all 9 artifacts, since you're not constantly praying to RNGesus to bless you with bonus event currency AND an above average pull of the top 3 chest options.
It's not as easy as the shuffleboard style, but at least there's not threat of getting RNG screwed by 3-4 strait rotations of only the worst 3 chest options, and/or getting hosed on obtaining the bonus currency.
In the 3 rotating chest events, I'm always sweating bullets until the very end to see if I can scrap by my final artifact. With the 'digging game' though? I'm never worried about making it, same deal with the shuffleboard style events.
...now if only the devs would give us a re-skin of the Wildlife mini game!? (hint-hint: please devs, please give us an Elvenar'd version of the Wildlife mini game from FoE - it's extremely fun, we win lots of stuff, and it requires at least a couple log-ins a day to use up all the mini game tickets!
)