We all know it's not springs, warps, enemies or ammo. Please don't say some broken event like Tweedle boss or Lava. Just the functionable ones.

In my opinion it's the 'This end up' box.

So, what do you think?

Probably the Echo event (#27). Like seriously, who the hell ever used that? I'm not even sure I know exactly how it works, but I've tested it and it does appear to be functional.

My guess would be either Area Warp Secret or the Xmas Bilsy.

Lori start pos

Or, basically a lot of the plus-only events.

Also area warp secret, like what Violet said. But then again, secret levels were broken?

Wait, what? IIRC the Medivo secret level functioned properly.

Originally Posted by Treylina

Also area warp secret, like what Violet said. But then again, secret levels were broken?

Partially broken, which is a fair point given the opening post, but IIRC if you used the "Coins" parameter on Area Warp Secret the brokenness went away.

If we're talking on a technical level, I'm going to guess Bomb is the least used functional event. For every event mentioned in this thread so far, I can come up with at least one level that contains them; in particular one of my uploaded levels contains both a Big Box and an Echo event. Can't say the same about Bomb (note the "technical level" assertion that eliminates levels that only use Generator events or Crate events that spawn bomb objects).

I placed several bomb events in an FSPII level, though you'll have to take my word for it. They were at the bottom of a pit, so I had enough confidence in my memory management that they seemed unlikely to already have exploded before the player reached them.