Free to play, no sign-up
Free Daily Logic Puzzles
Build today's 3D puzzle, take a 5-question spatial test, or solve a Train Tracks puzzle.
3D puzzle game, daily
Build the solid that has these three views
Tap a square to drop a cube. Drag to turn the view.
matched to build extra line to make wrong line
This is the main puzzle in THINK IN 3D: 120 of them, from whole cubes to 45° slopes.
Four kinds of puzzle
Play Train Tracks and spatial reasoning here for free. Murder mysteries and mystery coloring live in paperback books.
Train Tracks
Lay one railway across the grid using the numbers around the edge.
Murder mystery logic
Detective cases solved by deduction alone: case files, crime maps, picture-logic evidence and a 17,600-suspect guest book.
Spatial reasoning
Read the top, front and side views, then rebuild the 3D solid in your head.
Puzzles you solve by thinking, not guessing
Milo Marwick puzzles are pencil-and-paper logic puzzles you can also play here for free. Each one is built by our own puzzle engine and checked by an exhaustive solver, so every puzzle has exactly one answer. Easier puzzles are also graded by a second solver that only uses human techniques, so the difficulty label tells you what kind of thinking to expect.
What you can play today
The 3D puzzle game: build a solid from its top, front and side views, with a new puzzle every day. A five-question 3D spatial reasoning test, plus practice with cube nets, counting cubes and mental rotation. And Train Tracks, a route-finding logic puzzle with a daily puzzle and a library of 140 from easy 6×6 to expert 12×12.
Books and printables
Prefer paper? Download the free 3D puzzles PDF or the Train Tracks sample, or pick up a Milo Marwick puzzle book. You can read how the puzzles are made on the about page.
Frequently asked questions
Who is Milo Marwick?
Milo Marwick is the name behind a series of logic puzzle books and this free puzzle site. Every puzzle is built and checked by our own engine to have exactly one solution you can reach by reasoning.
Is it really free?
Yes. Every puzzle on the site is free to play and print, with no account. There is an optional email list for a free PDF pack and a weekly puzzle.
Which puzzles can I play?
Train Tracks, a route-finding logic puzzle, with a new puzzle every day and a library from easy 6×6 to expert 12×12, and spatial reasoning puzzles, where you match top, front and side views to 3D solids, with a daily set and unlimited practice.