1. You built ClickAlonzo in Unit 1. You can now keep track of players' scores, or add another sprite that chases you and you have to avoid or.... Invent your own ideas.
2. You built a Contacts app. You can invent "search" or some other feature. And you can make it look better.
3. You built sprite chase project. Lots of projects can come from that. Here's one: imagine that some sprites are wolves and some are sheep. Wolves need to eat to live, so they chase sheep and eat them if they catch them. But if they eat all the sheep, the wolves have nothing to eat and die, too. Sheep reproduce if they live long enough. Build a model that "lives" for a while.
4. You built sentence generators. You might make more interesting sentences, or parts of conversations, or even poems, or choose another language.
5. You built art and music generators. You might research what geometric ideas artists have used and model some of their art. Or you might find a way to write a melody as a list of positions on a scale and them map the melody to various scales.
6. You began a board game in Unit 2, and extended it to let two people play Tic Tac Toe. You might get the computer to play one side of the Tic Tac Toe game. Here are some things the computer might want to "think" about on its turn: Can I win on this move? If not, must I block the other player on this move?
7. There are zillions of other games on a Tic-Tac-Toe-like board. Here's one: On a six-by-six board, get four in a row. Here's another, originally invented by a nine-year-old girl named Rani: On a five-by-five board, on your turn, play in any space that doesn't touch (even at a corner) a space that has already been played in. Last person who can move is the winner. Tough game to play well!
8. The number guessing game is too easy. What twenty-questions-like game can you invent?

1. Use sprites as the buttons on a calculator, and make your calculator work.
2. Invent an algebra calculator, like multiply two binomials. You might represent -2x + 1 as the list {-2; 1}. It could help with homework!
3. Or come up with any idea of your own!

1. Bug Dance Animation
   
2. Kaleidoscope Visual Effects
   
3. Country Quiz
   
4. Pong is a classic video game from 1972.
   Pong Video Game
   
The Ferris Wheel project depends on nesting sprites, a little feature we'd have to teach them...
5. The Ferris Wheel project requires nesting sprites.
   Ferris Wheel Animation
   
6. Breakout is a classic video game from 1976.
   Breakout Video Game
   

The following videos are designed for Scratch, not Snap!, but the two are similar enough that you can develop one of these games using Snap!:

7. Maze Game
   
   Scratch is like Snap! for elementary school, but these games are cool.
   
8. Asteroids Game