Free spatial reasoning game — instant play, no signup, no download
Pack Suitcase gives you items of different shapes and a space to fit them into. It is a packing problem — the class of problem that is genuinely hard in the mathematical sense, which is why there is no formula and why it stays interesting.
Look at the items and the available space.
Place items to use the space efficiently.
Rotate items where the level allows it.
Fit everything to clear the level.
Levels add awkward shapes and tighter spaces.
Spatial planning and mental fitting — the practical version of spatial reasoning that shows up every time you load a car boot or a dishwasher.
Place the largest and most awkward items first. Small items fill gaps; large ones create them.
Work from corners inward. Corners are the hardest space to use later.
Rotate before rejecting. Most items fit somewhere in at least one orientation.
If one item will not fit at the end, the mistake was three placements ago. Undo rather than force.
Yes — every level is built from a known arrangement.
Depends on the level; the rule is shown.
Bin packing is a genuinely hard class of problem with no efficient general solution, which is why heuristics like 'largest first' are the standard approach.
Largest item first, corners before centre. It is the standard approach and it works here.