balls fall down, you get points, you make balls fall down faster and give more points

Interactivity ●●●○○ (you will lose efficiency if you don't upgrade) Difficulty ●●○○○ (not particularly difficult) Progression ●●●○○ (somewhat exponential) Content ●●●●○ (barely any downtime)

• no chance to spend money

• may promote gambling (jk)