Rami Ismail is one-half of Dutch developer Vlambeer, alongside designer Jan Willem "JW" Nijman. They're creators of games including Super Crate Box, Ridiculous Fishing, and Nuclear Throne.
In a recent talk at the Gamelab conference in Barcelona, Ismail outlined (around) 17 lessons for game developers, with key takeaways including:
"Why" is the biggest question
Take business seriously
Don't take business seriously
Your game can talk to you, too
You can't make the game in your head
Check out the full video above.