Never provide a dungeon without treasure. The longer they search and find nothing, the more your players will be convinced that the treasure is bountiful and exceptionally well-hidden. If left unchecked, they will eventually dismantle and excavate the entire site in their search for loot.
Deus Ex and The Treachery of Labels
Deus Ex Mankind Divided was a clumsy, tone-deaf allegory that thought it was clever, and it managed to annoy people of all political stripes.
There's a wonderful way to balance difficulty in RPGs, and designers try to prevent it. For some reason.
Let's ruin everyone's fun by listing all the ways in which zombies can't work, couldn't happen, and don't make sense.
Fixing Match 3
For one of the most popular casual games in existence, Match 3 is actually really broken. Until one developer fixed it.
If Star Wars Was Made in 2006?
Imagine if the original Star Wars hadn't appeared in the 1970's, but instead was pitched to studios in 2006. How would that turn out?