This was a simple d6 chart for rooftop parkour chases in an Arabian Nights game I ran. Pretty simple, someone falls from a rooftop and if you need to know what they land on.
1. A wagon full of stuff
2. An awning on a stall
3. A horse
4. A group of people
5. A tree
6. A fence
But it could be better and made to be more useful. Roll a d6 and a d4.
1.) A wagon full of:
I: Manure: no damage but you are covered in shit
II: Apples, Turnips or other food: 1 pt of damage per 10 feet and an angry merchant wants payment
III: Straw, no damage at all and you are hidden.
IV: Small angry animals in wicker cages which will impale you as they break. d8 damage per 10 feet.
2.) An awning on a market stall, you:
I: Bounce off it into (roll again)
II: Fall right through it, -1pt of fall damage and upset a merchant
III: Bounce off it onto the street, only 1pt of damage.
IV: Bounce into a second story window. During the day its open, during the night its a closed bedroom
3.) A horse:
I: Which already has an armed guard riding it.
II: Which is saddled and ready to ride! How dashing!
III: Which you just missed. It will proceed to shit on you.
IV: Which you land in front of, it will rear up to kick you.
4.) A group of people who are:
I: Armed guards who don't take kindly to this assault as you send them sprawling. 1 damage to all.
II: A thief escaping justice. You will be rewarded with a few coins and praise for aerial tackling them.
III: A wealthy merchant, coins spill everywhere and a milling chaos ensues you can easily be lost in.
IV: A poor pilgrim who is a revered holy man, an angry mob will form to chase and beat you.
5.) A Tree which is
I: A date tree, if you make an agility check you grab hold and can continue the chase.
II: A flowering tree in a garden, you appear to be peeking in a second story window with a woman changing. Make a charisma check, failure results in screaming for angry relatives, success a smile.
III: The ugly tree, you take 3d4 damage (instead of fall damage) as you smash branches on the way down.
IV: Soft and verdant. you land and become tangled in the boughs. No damage but it will take several rounds to get out.
6.) A fence that is:
I: A low stone fence, take d8 damage per 10 feet instead of d6.
II: A wooden picket fence, take d10 damage per 10 feet instead of d6 as you are impaled.
III: A wrought iron spiked fence, take a d12 damage per 10 feet and you are stuck on barbs.
IV: Really more of a brick wall. Take d8 damage as you bounce into (roll again)