B✦THINKamigBOBGAME CREATOR · GRADES 3–6
YOUR IDEAS. YOUR GAME.
🎮 MY GAME KITSave a copy so you can keep building later.
PLAYER 1: YOU!

Play it. Change it.
Make it yours.

Your forest adventure is ready to build. Play it, then make it yours!

Move with ← → · Jump with Space

🎮 Class Arcade

Have a class code? Share your game and play together.

ONE BOB. SO MANY ADVENTURES.

What will you make?

Jump across a forest. Bounce to the clouds. Fly through a sky maze.

Your ideas can become a game.
🌲 Platform adventure
ANIMATED GAME IDEAS
THE AMIG WAY · EVERY ACTIVITY

Bob’s Way!

Ask → Make → Improve → Grow. Follow Bob’s Way in every activity. Go back or jump ahead anytime.

EVERY STEP IS OPEN

Ask it! Make it happen! Improve it! Grow what you know!

Bob suggests: choose a world, then build a route.
BOB’S POWER-UP TIP★ Start · ★★ Explore · ★★★ ChallengeYour next discovery: ★

Start small: change a platform, try your game, then save a copy.

What do the stars mean?

★ Start: place, play, save. ★★ Explore: combine tools and test ideas. ★★★ Challenge: connect areas, reuse routes, or make your own designs. Every tool is available. Stars guide your choices; they are not a grade. Bob celebrates successful tests after you make changes. Discoveries stay in this browser.

BOB’S MOVES
READY TO PLAY

Bob is ready for your adventure.

Press Play test to see Bob’s moves and the results.

BUILD MODELEVEL 1
♫ Instrumental adventureCollect coins. Clear required blocks. Reach the flag.Move ←→ or A / D   Jump / let go Space · Swim / door ↑↓ · Tool F / X · Select 1–4
TRY ONE SMALL CHANGE

Tell your game what to do.

Try a suggestion below, then press Apply and play again.

See every supported command

Edit a command by changing its theme, color, or texture, then press Apply. Themes: sky, forest, space, sunset, ocean, desert, snow. Colors: green, blue, red, yellow, purple, orange, white, black, or #RRGGBB. Textures: grass, stone, brick, wood, metal, checker, stripes, plain. Commands use built-in rules. Unsupported sentences will ask you to try a listed command.

Keyboard level editor

Select a tile above, choose a row and column, then place it. Rows run from top to bottom.

WELCOME, GAME DESIGNER

Your first game, step by step

  1. Build: click a piece, then paint it on the grid. Use Start and Flag to set the beginning and end.
  2. Change: try a command such as “add 5 coins” or “set jump to 14”.
  3. Bob’s Moves: watch the panel above the game for green good moves, red bad outcomes, and neutral movement.
  4. Test: click Play test. Use arrow keys or A/D to move and Space or ↑ to jump. Collect every coin and reach the flag. A key opens doors. Required Clear blocks vanish the first time Bob hits them. Clear every one before the flag unlocks. Double-bounce blocks start at 2. Land once to make them 1, then press Space, Up, or Jump in the air for a second bounce that restores the block to 2. Reuse it for another direction. Skip the extra bounce to clear it on the next landing. Bounce puzzle mode makes Bob bounce automatically; steer with Left and Right. Spikes and lava cost a life. Springs launch you. Use Up/Down on ladders. Checkpoint flags save your respawn spot. Ice is slippery. Place Portal A and B for two-way travel. Black holes send you to wormhole exits. Secret spaces are visible only while building and collect all coins in the current level.
  5. Hits, flowers and extra lives: An enemy hit takes your equipped tool. Without a tool, Bob shrinks and a glowing flower grows in the area. Touch it to grow again. A hit while small costs a life. Bob blinks briefly after a hit so you can move away. Place a Bob statue fountain from Movement & discoveries: touch it once for an extra life and a big 1 UP!
  6. Moving platforms and flying puzzles: In Movement & discoveries, choose Moving platform for side-to-side motion or Lift platform for up-and-down motion. Land on top to ride. Try a flying puzzle makes Bob move forward automatically: click or tap the game, tap Jump, or press Space for each flap. Keep tapping to rise and stop tapping to descend through the gaps.
  7. Bridges: Open Doors & connected areas, choose Bridge and drag sideways across a gap or water. Bob can walk across it and jump through from below. Erase individual pieces to change the crossing.
  8. Wild challenges: Piranhas chase in water. Tornadoes pull and toss Bob. Escape quicksand with Jump or Up plus sideways movement. Lightning clouds warn with a yellow glow and a marked column before striking. Ice holes cut through the ground; swim or jump out quickly. Skeletons and zombies can be stomped, frozen or defeated with tools. Boiling springs launch Bob high into the air.
  9. Rolling hills, volcanoes and pets: Select Rolling hill in Nature & new worlds. Click near the ground, then drag the yellow handle up or down. Erase its handle to remove it. Volcano lava costs a life. Fish and jellyfish belong in water; bats and sky drones patrol the air. In Coin powers & pets, adopt for 8 coins with B. Your pet takes the first enemy hit and returns after you lose a life or restart the level. It automatically stops one enemy every 15 seconds. Pay 20 more coins to evolve: two saves every 10 seconds.
  10. Coin powers and your designs: Place a carrot, winged shoes, or Medusa headband from Coin powers. Stand beside one and press B: 5 coins buys 15 seconds. Press B again to add time. Carrot: F / X fires laser eyes. Shoes: hold Up or Space to fly. Headband: nearby enemies freeze, then thaw after you leave. Spending coins does not erase collection progress. Open Your own designs to choose a feature and import a Piskel PNG. Restore original design removes just that replacement. Music & sound controls the game soundtrack and effects.
  11. Doors and tools: Every door needs a key. Hold Up at a Beginning door to return to the start, a Coin room door for 12 coins in 30 seconds, or an Upside-down door for this same level rotated and dark. Complete the dark level and touch its flag to return. Stomp on patrol bots, slimes, bats and rolling bots to defeat them; side contact costs a life. Collect tools, then press F or X (or Use tool). Select collected tools with 1 Ray, 2 Coffee, 3 Bowling, 4 Lasso. Tools can be reused. Bowling balls can knock down several enemies.
  12. Water, vines & clouds: Open Nature & new worlds in the building pieces. Paint water to make lakes; stack waterfall tiles. Swim with arrow keys or W/A/S/D. Space paddles upward. Stack vines downward, hold Up near one to grab it, use Left/Right to swing, and press Space to release. Clouds let Bob jump through from below and land on top. Hill up and Hill down make sloping ground. Trees are scenery you can walk through. Try the three new world starters to see examples.
  13. Block puzzles: place Clear blocks to create required one-hit targets. Double-bounce blocks preserve a connecting route: landing changes 2 to 1. Tap Jump in the air to restore 2. Without that extra bounce, the next landing clears the block. Clear all marked blocks and collect every coin to unlock the flag. Try the bounce puzzle starter for a ready-to-play example. Use Colors & textures for pixel-style platform and flag designs.
  14. Discover: place one Portal A and one Portal B for instant two-way travel. A Black hole sends Bob to the Wormhole exit. Place endpoints again to move them. Hidden Secret spaces collect every coin in the current level when touched; Bob still needs to reach the finish flag.
  15. Keep: Save project downloads an editable JSON file. Export playable game downloads an HTML game for teacher review and sharing.

Costumes use a single PNG. All seven Bob costumes change poses while running, jumping, falling, landing, climbing, using portals, and finishing a level. Custom PNG costumes use a small bounce and direction flip. The included Bob costumes use your approved Bob Bank artwork.

Click a tile with the right mouse button to erase. Undo restores the last build change. Use the keyboard editor below the workspace if you prefer.

Open Class Arcade to share games and play with your class. Browser autosave can be cleared; keep your saved project file.

Keep your game. Play it again.

↓ 1. Save my game

Press the green Save my game button. Your game file goes to Downloads.

Check that the download finished. Save again after your next big change.

↥ 2. Open it next time

Press the blue Open my game button. Find your game in Downloads and choose it.

Your saved game file ends in .json. Keep this file to edit your game.

↗ 3. Share with your class

Press the purple Share my game button. Join using your class code, then choose Share my current game.

To send a playable file instead, use Export playable game.

This browser also remembers changes automatically. A downloaded copy helps you keep your work if browser storage is cleared or you use another device.

BOB’S EARTH LAB

Shape a world. Discover why.

BUILD. SHARE. PLAY.

Class Arcade

🎮 Students: join your class

Keep the class code within your class. Your game is only shared when you press Share. Your connection is remembered on this browser.

🍎 Teachers: start a class

No approval queue. Students with the class code can join and share. You receive a separate private teacher key.

Have a teacher key?
JOIN OUR CLASS ARCADE

Open THINKamigBOB → Class Arcade
Enter this code and choose a nickname.

Keep this code within our class.

BOB’S WAY · FIRST SCRATCH MISSION

My idea. My first Scratch code.

This takes your artwork into Scratch. Your game rules stay in Game Creator. In this first mission, Bob moves over a picture; platforms, coins, doors, and enemies need their own code later.

A · Ask

How can I make my player move left and right?

Choose one level and a player in Game Creator before downloading.

M · Make

3. Open Scratch ↗

Hover over Choose a Backdrop → Upload Backdrop. Choose your -scratch-backdrop.png file.

Hover over Choose a Sprite → Upload Sprite. Choose your -scratch-player.png file. Select your player, then click Code.

I · Improve

Build these two small scripts on your player:

when [right arrow ▾] key pressedchange x by (10)
when [left arrow ▾] key pressedchange x by (-10)

Press each arrow. Did Bob go the right way? Try 5 instead of 10. Which feels better?

G · Grow

Try adding Up and Down scripts using change y by. Positive y moves up; negative y moves down. This moves Bob—it does not add jumping or gravity yet.

Save your Scratch work: File → Save to your computer. Next time: File → Load from your computer.

Tell a partner: “I changed ___, and Bob ___.”

Download your two pictures, then open Scratch. No Scratch sign-in is needed for this first coding activity.