Cartridge code (267 chars):

x=9y=9v=2z=1p=64t=0s=0::●::cls(s)x+=v
?s,63,62
y+=z
z+=.3if(x>123or x<5)v*=-1
h=t
if(btn(0))t-=1
if(btn(1))t+=1
t=mid(-5,t,5)
if(h==t)t*=.7
p+=t
circfill(x,y,3,s+7)rect(p-7,125,p+7,126,s-1)
if y>122then
k=s
if(x>p-9 and xif(k==s)run()end
flip()goto ●