Whew. Just read through this whole post and the breadth of content and ideas is astonishing.
Kudos to Aircool and Lord Null -- thought their ideas were especially awesome.
Fans of ideas like the Tree of Life, a ship captain / fleet going rogue and disrupting relations, the mad scientist who invents a major race's subspecies, ExtremeDanger's Faith
Conversion, the double agents, the galactic Mad Cow idea, the giant space creatures, and the galactic network worm that infects research buildings (I had the same idea!).
Got a few ideas of mine own. Some disclaimers: I have imperfect knowledge of how every aspect of this impressive game works, and am such a lurker I might be posting ideas that have come up before. Apologies for anything moronic.
MEGA
- Scientific Calamity -- a groggy scientist screws up with the particle accelerator and his entire research building explodes, filling a research building tile with a graphic of a volcano / earthquake fissure / radioactive cloud. Could change the tile from usable to terraform-able so you can recover it later in the game. If we're feeling nasty, maybe it takes up multiple tiles (any square configuration) but that might make it destroy 1 per galaxy improvements, which would be a bummer. But I guess that's the point -- it's a mega event. Gotta deal, right?
- Uplift -- any given race suddenly has a breakthrough in genetic engineering and has the power to "uplift" (a la David Brin) certain other native species. Could open up a new Gengineering branch on the tech tree at two levels, the first of which allows for a population rate bonus but with hampered "population quality" that gets brought up to 100% after the second tier is researched. Thinking of this like the extreme colonization mechanic . . . and in fact, in might not need to be a Mega event at all, but just something else for us to focus our precious early-game research weeks on! (Also -- someone should REALLY do an Uplift Universe mod for GC2).
- Virtual Reality Disaster -- an alien agent slips a program into another civ's Virtual Reality Center(s) that overloads their brain / leaves it impossible for them to leave the, er, Matrix. The result? 5% of the pop on the affected planet(s) dies, and all virtual reality centers are downgraded back down to the previous tech level as the civilization refuses to go anywhere near the things. A corollary might be that the suffering civ gets a boost to its spy production rate as more civilians are willing to enlist in fighting a shadow war. The Virtual Reality Module trade good cannot be trader to this civilization.
- Gift from On High -- an amateur astronomer on one of your worlds notices that a pulsar deep in a neighboring galaxy has actually been blinking out a message over the past several centuries. After a long all-nighter in the archives he determines the pulsar's actually been blinking out the plans for a tech in binary -- you gain the new tech, but not before he proudly posted the results of his finding on his blog. All civilizations gain this tech (could be random; could be thematically appropriate, like Ultra Life Support).
- Going Green -- a massive eco-friendly movement is sweeping the galaxy -- citizens of all races are clamoring for more environmentally responsible goods, and the changeover in R&D and manufacturing drop social output 20% one year, and 10% the next. After the 2 year period is over, all planets receive a +2 planet quality. Could also just happen to one civilization, but maybe that would only happen on certain planets so the civ wouldn't be crippled.
- Think someone mentioned your little AI bot guy doing something . . . along those lines, just for humor, what if your AI bot takes five random techs and defects to the Yor? Or better yet, replaces the Yor leader on the diplomat screen?
OTHERS
- Love the idea of a Hero unit that affects nearby ships -- and maybe planet quality, if the hero ship is docked there. Could try doing it like Espionage, giving a civ the opportunity to raise heroes . . . or make it an emergent property of #/enemy ships destroyed.
- Mining Anomaly -- after mining stations have been upgraded a certain amount they can also turn up Precursor vessels or the general early-game anomalies -- provides some extra incentive to upgrade Space Mining.
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I definitely like any ideas that require a non-standard addition to the tech tree in order to compensate.
Thinking of these ideas is more fun than working. Maybe I'll post more tomorrow. Thanks for the great game Frogboy/et. al. -- has the most replay value of any game I've ever owned. Looking forward to playing v1.6!