Every Obstacle in Color Tunnel and the Move That Beats It

Color Tunnel has no random shapes. The tube is built from a handful of obstacle pieces, repeated in denser combinations as the level rises. Once you can name the piece you are looking at, you already know where to steer. This is the list, in the order the game introduces them.

Full slabs

A block that fills most of the tube's width, with a gap on one side. It is the first thing you meet and the easiest to read: the gap is the side of the screen where the stripes still scroll. Move there early and do not overshoot into the wall — a slab is usually followed by a second slab with its gap on the other side.

Low bars

A short, wide block near the floor of the tube. It looks harmless because it is small on screen, but you are at floor level too. There is no jump, so a low bar is passed at the edge, not over the top. If the bar is centered, either edge works; if it is off-center, take the wider side.

Block rows

Single blocks staggered across the tube with one gap between them. This is where most Level 2 runs end, because the gap is not always where the stripes suggest. Watch the row from far away: the blocks arrive in a line and the gap is visible for a full second before the row reaches you. Slide into it and stop — do not keep the key held.

Rotating bars

The obstacle that turns across the tube instead of sitting still. It arrives around Level 3 and is the piece that ends most long runs. The bar sweeps slowly and the open space moves with it. The trick is to stop steering: pick the side that will be clear when the bar reaches you, not the one that is open now, and wait in the middle third until you can see it.

Double patterns

From Level 4 the game stacks pieces: a slab immediately followed by a block row, or a low bar under a rotating bar. There is always a path, but it needs two moves in quick succession, which is why tapping the arrow keys instead of holding them matters. A held key carries you past the first gap and into the second block.

The speed readout

The top-right number is meters per second. Level 1 is 77.5; by Level 5 it is past 150. The obstacles do not get harder on their own — they get closer together in time. If a run keeps ending at the same speed, that is your reaction limit, and the only fix is more short runs.