Action progression loop

1st pillar

"The engine"

BASE GAME LOOP: Something fun and do it over and over.

2nd pillar

"The wheel"

PROGRESSION: A sense of progression. Same base loop but progression. Feels rewarding.

3rd pillar

"The road"

DIFFICULTY CURVE: Game gets harder the more you play. Complexity increases, difficulty increases, more challenges. Up until final test of all things learned to complete the game.