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Puzzle
Sort colored nuts onto matching bolts and boxes in this addictive stack puzzle. Match three of the same color, manage limited holding space, and clear every level.
Satisfying stack
Clear 3D nuts
Simple tap or click sorting that is quick to learn on any device
Progressive levels and mystery nuts keep the sorting challenge fresh
Bolt Sort 3D is a colorful nuts-and-bolts sorting puzzle inspired by Nuts Stack Sort: Nuts & Bolts from Ropoto. Hex nuts are stacked on bolts, and you must move them into matching color boxes three at a time.
Easy tap-to-sort controls hide deeper planning: limited placeholder bolts force you to think ahead, and mystery nuts marked with question marks stay hidden until you uncover them.
Each level is a calm but challenging brain teaser. Clear the tray, earn progress, and use boosters only when space runs out. Perfect for casual puzzle fans on desktop and mobile.
Tap or click nuts to move them from stacked bolts onto temporary holders or into color-matched boxes. Each box needs three nuts of the same color to complete.
Watch the sequence of incoming box colors and plan which nuts to park on the limited placeholder bolts. Uncover mystery nuts by clearing the pieces above them.
Finish every stack on the board to clear the level. Later stages add more colors, tighter space, and trickier stacks—undo, extra slots, and hints can help when you get stuck.
Click a nut or stack to select it, then click a placeholder bolt or matching color box to place it. Sort carefully so you do not fill all temporary slots.
Tap nuts to pick them up and tap a holder or color-matched box to drop them. Plan each move so three matching nuts can fill the current box.
Always check which box color arrives next so you do not fill holders with the wrong nuts.
Keep placeholder bolts as empty as possible—space is your most important resource.
Clear nuts that block mystery (question-mark) pieces early to reveal hidden colors.
Move groups that already match the current box before rearranging unrelated stacks.
Do not park a third matching nut on a holder if a box for that color is about to arrive.
Save undo and extra-slot boosters for near-full boards instead of early levels.
When stuck, reverse recent moves and free one color completely before touching others.
Stack-sort levels focused on matching three same-color nuts per box
Limited placeholder bolts act as temporary holding space
Mystery nuts with question marks add hidden-color challenges
Boosters may include undo, extra slots, and hints on tougher stages
Portrait HTML5 puzzle playable in the browser on desktop and mobile
Difficulty rises with more colors, denser stacks, and tighter space
