A very small one: many, many years ago I was playing this Flash racing game that had a different challenge/track every day. There was a more-frequent-than-you'd-expect glitch in which, if you fell off track, sometimes you'd respawn just next to the finish line. Out of my own pride, I'd restart the race every time I'd benefit from the glitch to win "fair and square".

Interesting. I had tried to start that game and couldn't quite get into it, might try it again.

Random loot... I think most games tend to have things in lists or rare drops based per monster. Having it be totally random may make it more interesting, or less so.

I beg to differ. Or at least I for one refer to it as ARPG done right, very much unlike, say, the "revered" Diablos or, say, Torchlights...
The random stats of loot are an issue though, yes, and they're generated when you first mouse over the item or container, so if you're looking for something good you can take advantage of that and save before mousing over, then reload until it's something worthwhile.
It's not totally random, tends to generally have a rough overall quality, but the specific stats of an item or the items in a container are random, so can have that overall value split between smaller values in several traits or all poured into one, and those traits may fit the item and your character more or less or not at all.

"I'd rather be lucky than good." ~ Lefty Gomez

If a game gets too easy it can definitely get boring, so I've had lucky loot or broken character builds kind of ruin a game for me.

Skyrim is a good example, where you can abuse the crafting system to level up super fast and craft super good items, which makes you both overpowered and kills the desire for searching caves for loot. Turning up the difficulty just makes enemies take longer to die, nothing interesting.

Hmmm just reminded of Bloodstained Ritual, you can take the randomizer and you can get a really good weapon/armor at the beginning which can make the game a lot easier very early on.

Not that it matters much.

Mhmm.. Maximize smithing and then make ebony items to sell at high value. They don't have the money? Buy a lot before you sell the ebony master bow...

Though i remember looking for the endurance for it because well used to Morrowind and Diablo...

That happens in other randomizers as well.

For instance, in the Dragon Warrior randomizer, if you get the Hurtmore spell early, you can kill enemies that are far stronger than you normally would be able to at your level, and level up quickly as a result, at least until you run out of MP. If you get Erdrick's Armor early, then you won't need to worry about healing that much, as you'll recover HP with every step, and poisonous swamps become non-threats.

In the Zelda: A Link to the Past randomizer, getting a decent weapon early makes a big difference. There's also the fact that you could gain dark world access early, but that also means you may be forced to go to the dark world early.

I believe the Final Fantasy randomizer can, if you get a lucky seed, makes spells like NUKE and LIF2 1st level spells.