SoulWager

I'd love to see a video of buzz playing KSP.

I'm sure it knocks em dead.

So, what's your favorite pick up line?

Those are implicit in the game mechanics, while you can calculate your ∆v from the rocket equation, trial and error is also a perfectly valid way to play the game. You can take the game as seriously or casually as you want. There are also mods that will calculate ∆v as you're building and flying your rocket.

There are some tradeoffs made between realism and playability. The two biggest are the size/density of planets, and that gravity isn't n-body. Gravity is simulated with conic patching, so you only see gravity from one planet/moon/sun at a time, and don't see Lagrange points.

Here's a guide I wrote a while back:

https://old.reddit.com/r/KerbalSpaceProgram/comments/5k2the/i_have_181_hours_in_the_game_and_i_am_absolutely/dbkvla6/