Picture your classic 4-in-a-row game and then crank up the pace. Fast Four is a head‑to‑head race where two players drop marbles into a single tall column. Every drop adds to the tension as you watch colored pieces stack in the tower, vying to be the first to see four of your color in a row. When the tower fills, pull the small tab at the bottom to send the marbles tumbling into the tray and start again. It’s a quick, tactile game that looks great on display and plays even better.
At Ozarkexpeditions, we're trying to make engaging games that keeps the kiddos off the screens. Whether you’re looking for an interesting filler between long board‑game nights or a fun way to keep the kids engaged, Fast Four delivers. The big funnel at the top makes it easy to load pieces at speed, and the wide base collects everything neatly. It’s made with Bambu printers in mind, so it prints cleanly in vibrant colors without support.
Based on feedback, the tower is now printable on A1 mini or larger.
Gameplay
Players: 2 plays best, but also play solo or with a party.
Objective: Be the first to connect 4-in-a-row marbles vertically in the column. Alternatively, just play until one color has 4 marbles in the column.
How it works: Both players drop their marbles at the same time, aiming for quick hands and sharp eyes.
Reset: Pull the small tab at the bottom of the column to release the marbles back into the tray.
Printing & Assembly
The base, column, and funnel print as a single piece – no assembly required. Or, you can print the A1 mini and larger version that simply required you to push the target top onto the base column. You can use a 2.5x6mm machine screw to ensure that target top does not move.
The ball launcher requires quick assembly as shown in the image below. It's fully printed and easy to put together!
No supports needed
Designed to use 14mm plastic marbles, the same size used in Hungry Hungry Hippo. Here is our amazon link: https://amzn.to/4nWknMS
You can optionally use 5x2mm round magnets for a more tactile feel for the ball stop. Here is our amazon link: https://amzn.to/3Ws4CBv
Play around with coloring in Bambu Studio to get the most from your AMS. Each section pops with different filament choices.
This design is specific to Bambu Lab printers and compatible with H2S and H2D, as well as a version for A1 mini and A/X/P sizes.
Just slide the pegs in and clip on the c-clips and you'll be ready to play! The threaded launcher-stopper is designed for you to change the launch angle when needed. Tip: apply a little bit of silicone grease on the moving parts for faster gameplay, if needed.
Game Play Variants
Classic 4-in-a-row: Instead of racing, take turns launching marbles. The goal is to get four in a row vertically or the first to four of their color in any order.
Timed Challenge: Set a timer for 60 seconds. See how many times you can achieve four in a row before the timer runs out. Lowest total wins the next game.
Color Mix: Use more than two colors and play with 3–4 players. Only the top two colors at the end of each round score.
⚠️ Warning: Contains small marbles and magnets. Not suitable for young children – choking hazard and risk of serious injury if swallowed. Adult supervision required.
If you enjoyed this project, don’t forget to share a Boost 🚀 so more makers can discover it, and I can keep bringing new games like this to life!
ozarkexpeditions
