How do I make my character stop running and stand idle after I release the running button? 
Hook up the keyboard sensor to a “not” controller, and have that hooked up to your idle actuator.
Could you explain that in a little more noobish language? :o
Are you using armatures? It’s very easy with those.
Have an always sensor attached to your idle animation, and set your idle animation to a high number (like 5) for its priority. Add a few frames of blend if you want it to look smooth instead of abrupt.
Then have your running animation activate with a keyboard actuator, and have its priority number lower than your idle animation’s. Lower priority numbers mean they’ll override animations with higher priority numbers.
That’s it!
-Sam
Du-hude! That’s wicked sweet! Thank you, bruh!
It’d be really cool if we could get a “blend” option and “priority” for IPOs. There are plenty of things I could do with that.
Yeah…:D. Hey, how would I like make it like gravity working on my character? Like how would I make him stay “on” the ground, and then like when he comes to a hill, he follows the incline instead of going thru it?