As I write Zombie Exodus: Safe Haven, I consider skill checks that are made throughout the story. A skill check occurs many times during the game. For example, you may throw a rock past a pack of zombies to distract them. This would entail an Athletics check. I check the character's Athletics against the difficulty of the challenge. In this example, I may set the difficulty at 45. Lower than a 45 is a failure, while 45 or above is a success. I then write a failure scene and the success scene.
There are also times when I write 3 variations: high success, low success, failure. This takes extra time and effort to write the third path (high success).
By the time your character has reached Part 4, you have had numerous opportunities to increase skills. You also may add skill points and attributes through in-app purchases. Therefore, most characters have a wide range of skill ratings.
As a player of my game, how do you feel about skill checks? Do you think there should be a low difficulty to make your character stronger? Do you think skill checks should be higher to reward players that have invested in a skill? Do you think I should use more variations (high success, low success, failure) even though it takes more time and effort?