Literally a week after getting my TI-82, I wrote this simple game for it.
The objective of the game is to stop the slider ("X") at the right time so that it matches up with the target ("V")
You have four lives (including when zero are remaining), and a hit will yield either 100 and additional 150 score points if you are lucky (3/4 and 1/4 probability).
If you get a score divisible by 1000, you get additional 250 points and one more life.
However, if you miss, 150 points get deduced from your score and you lose one life.
To win, you must score 15000 or more points.
You lose the game if either you lose all of your lives, or if you don't stop the slider in 26 steps (more than enough to stop it from any position).
The controls are simple: Enter to stop the slider and Clear to clean-up the screen and exit the game.
Please report all the bugs encountered so that I can fix them 

Screenshot:


Also published on GitHub Gist: https://gist.github.com/SopaXorzTaker/48f9dc824a907f35112fb940b6e21440.

Update 2016/08/28: Update the displayed score upon victory
# Comment: -> is the STO command, >= is the greater than or equal sign (≥), <= is the less than or equal sign (≤), and != is the not equal sign (≠).
# SopaXorzTaker, 2016
# Good luck typing that in (or use the TI utility if you have a link cable).

0->A
1->B
3->C
1->D
0->E
0->F
25->G
0->K
ClrHome
Output(1,2,"SCORE
Output(2,2,0
Output(3,2,"LIVES
Output(4,2,3
Output(7,9,"V
Repeat K=45 or C<0 or A>=15000 or G<0
If A!=E
Then
Output(2,2,"               "
Output(2,2,A
End
If C!=F
Then
Output(4,2,"               "
Output(4,2,C
End
Output(8,1,"................
Output(8,B,"X
A->E
C->F
getKey->K
If K=105
Then
25->G
If B=9
Then
A+100->A
If rand>.75
A+150->A
If fPart (A/1000)=0
Then
A+250->A
C+1->C
Output(2,7,"1 UP!
For(I,1,50
End
Output(2,7,"     "
Output(1,7,"1 UP!
For(I,1,50
End
Output(1,7,"     "
End
Else
A-150->A
C-1->C
Output(5,2,"MISS!
For(I,1,50
End
Output(5,2,"     "
Output(6,2,"MISS!
For(I,1,50
End
Output(6,2,"     "
End
For(I,1,10
End
B+D->B
If B>16
Then
16->B
0-D->D
End
If B<1
Then
1->B
0-D->D
End
G-1->G
End
If C<0 or G<0
Then
Output(7,1,"                "
Output(8,1,"YOU LOSE!       "
Pause
End
If A>=15000
Then
Output(2,2,A
Output(7,1,"                "
Output(8,1,"YOU WIN!        "
Pause
End
ClrHome