Projects

🪙 Catch

beginner learn: input, falling things, a score.

paddle is {x: 60}
coin is {x: 64, y: 0}
score is 0
to update
  if key "left" paddle.x is paddle.x - 3
  if key "right" paddle.x is paddle.x + 3
  coin.y is coin.y + 2
  if coin.y > 124
    coin.x is 8 + random 112
    coin.y is 0
to draw
  clear screen to dark blue
  draw rect at paddle.x, 120 size 16, 4 in white
  draw circle at coin.x, coin.y size 4 in yellow
  write "catch the coins! {score}" at 6, 4 in white on hud
run game with update and draw

• Add catching: when the coin reaches the paddle row, check coin.x is near paddle.x → add 1 to score.
• Speed the coin up as the score rises.
• Add a play sound "coin" on a catch.

☄️ Dodge

beginner learn: avoidance, respawning obstacles.

player is {x: 64}
rock is {x: 30, y: 0}
to update
  if key "left" player.x is player.x - 3
  if key "right" player.x is player.x + 3
  rock.y is rock.y + 2
  if rock.y > 128
    rock.x is 8 + random 112
    rock.y is 0
to draw
  clear screen to black
  draw rect at rock.x, rock.y size 6, 6 in red
  draw circle at player.x, 118 size 6 in green
  write "dodge the rocks!" at 30, 4 in white on hud
run game with update and draw

• Add a lives counter; lose one when a rock hits you.
• Add a second rock (a list of rocks).
• Add a time limit is 30 seconds — survive the clock.

🚀 Shooter

intermediate learn: shooting, projectiles, lists.

ship is {x: 64}
bullets is []
bullets are projectiles
when "space" is pressed
  b is sprite {x: ship.x, y: 110, dx: 0, dy: -1, speed: 3}
  add b to bullets
to update
  if key "left" ship.x is ship.x - 2
  if key "right" ship.x is ship.x + 2
to draw
  clear screen to dark blue
  draw rect at ship.x, 116 size 8, 6 in white
  each b in bullets
    draw rect at b.x, b.y size 2, 4 in yellow
  write "press space to shoot" at 18, 4 in white on hud
run game with update and draw

• Add targets: a list of sprites tagged hostile, and when target is defeated → add 1 to score.
• Make hit targets burst 8 sparks for some juice.
• Make the targets move down over time.

🎨 Paint

beginner learn: the mouse, building a list, creativity.

dots is []
when mouse is clicked
  d is {x: mouse.x, y: mouse.y}
  add d to dots
to draw
  clear screen to black
  each d in dots
    draw circle at d.x, d.y size 4 in pink
  write "tap to paint!" at 36, 4 in white on hud
run game with update and draw

• Change the brush color or size.
• Pick a random color for each dot.
• Add a key that clears the canvas (dots is []).

More templates

Want a Snake, a platformer, or a multiplayer game? Open the matching demo on the home page — Snake, Pitfall Hop, Tag — read its code, and remix it. Teachers: see the lesson plans.