What is CircloO 2?
CircloO 2 is a physics-based puzzle platformer created by Florian van Strien, released in 2019. In this game, you control a small sphere navigating inside a round arena, rolling along curved surfaces to reach small target markers. Each marker you collect expands the outer circle and reveals new terrain, dynamic obstacles, and tricky ramps. The game runs directly in your web browser with no downloads or installation required.
Key features
- Dynamic level expansion: Each collected ring enlarges the circular arena and uncovers the next section of the course.
- Physics and momentum: Build speed on steep slopes and half-pipes to launch over gaps and reach elevated platforms.
- 24 distinct stages: Solve 24 handcrafted levels filled with moving hazards, ramps, and gravity shifts.
- Speedrun tracking: Replay completed stages to refine your lines and beat your best completion times.
- Original soundtrack: Features background audio composed specifically for the game by Stijn Cappetijn.
How to play
- Start the level with your sphere positioned at the bottom of the initial circular enclosure.
- Use your movement controls to roll back and forth along curved walls to build kinetic momentum.
- Launch across gaps and scale steep ramps to reach the glowing circular marker.
- Touch the marker to expand the boundary and reveal the next puzzle area.
- Navigate through the newly opened obstacles until you collect the final marker of the stage.
Controls
| Action | Keyboard |
|---|---|
| Roll left | A or Left arrow |
| Roll right | D or Right arrow |
| Move up or jump ramps | W or Up arrow |
| Move down | S or Down arrow |
Momentum and gravity mechanics
Success in CircloO 2 depends entirely on understanding how momentum interacts with curved architecture. Because the sphere cannot jump on flat ground, gaining height requires rolling back and forth inside bowls or down steep drops. Timing your directional inputs as you ride up slopes allows you to carry speed over obstacles. When the stage expands after collecting a ring, newly revealed sections alter how gravity and inertia carry your ball across the arena.
Tips and strategy
- Rock back and forth: Treat curved depressions like a half-pipe, alternating your directional input at the peak of each swing to build maximum height.
- Anticipate level growth: Keep your ball steady when touching a ring, as the sudden arena expansion can fling you toward new hazards.
- Preserve downward speed: Rolling down long curves grants the velocity needed to clear large gaps and steep inclines.
- Study obstacle cycles: Moving barriers operate on set patterns, so pause briefly on flat spots to time your approach.
- Replay for faster times: Once you know where each ring spawns, run the stage again to optimize your route.
Similar games
If you enjoy physics puzzles and skill-based precision, check out these related titles on this site:
- Truck Loader: Maneuver a specialized vehicle with a magnetic arm to solve physics puzzles.
- Icy Purple Head 2: Slide through challenging obstacle courses by toggling friction states.
- Arithmetica: Test your mental math and problem-solving speed with fast-paced numerical challenges.
Developer and history
CircloO 2 was created by Dutch developer Florian van Strien and released on December 18, 2019. It serves as the direct sequel to the original CircloO, expanding on the core circle-growing concept with 24 stages and music by Stijn Cappetijn. Florian van Strien also created the management title The Final Earth 2.
