Skwizzo® Block Jam is now available: every block has its own exit
Since 2 September 2026, Skwizzo Block Jam has been available on Google Play for Android. It is the first mobile game developed entirely in-house by Quaradur Industries: a sliding block puzzle designed for short sessions and long-term progression. The article describes its rules, content and design choices.
The rules
Each level opens with a grid already filled with coloured blocks and, along the frame, a number of exits that are also coloured. There is a single rule: a block leaves the board only through the exit of its own colour. The player drags the pieces across the grid and must identify the sequence of moves that clears the way for each of them before the level timer runs out.
A problem of sequence
The difficulty lies not in understanding where a block must go, but in clearing its path: in front of it there is almost always another piece, which is itself obstructed by a third. The name of the game, Block Jam, describes precisely this congestion. The same move can open one gap and close another, and as the grid becomes denser the valid sequences decrease: reasoning prevails over random attempts.
1000 levels designed one by one
The levels are not generated automatically: each one has been designed individually, solved with an in-house solver and placed in a calibrated progression. The first contains three pieces and a single move, enough to learn the gesture; further on, completely full grids appear, in which only one solution exists. Between the two extremes the difficulty increases steadily, with no regressions.
Elements introduced gradually
The game does not present every new element from the first level: it introduces one at a time, leaving the player time to absorb it before the next. These include blocks that slide in one direction only, blocks covered by layers to be removed, linked pieces that move together, gates locked until opened with a key, ropes to be cut, exits reserved for those who have collected the star, and time bombs.
Timer and aids
Each level has its own timer, and the best time is recorded alongside the level. The time limit serves to give weight to the choice of the correct move, not to create haste. When the grid becomes jammed, three aids are available: Freeze, which stops the timer for ten seconds; Hammer, which removes the selected block; and Magnet, which eliminates all blocks of one colour at once.
A game without pressure
Lives refill automatically over time and nothing encourages the player to return sooner than intended: the game can be opened and closed at will. Block skins are unlocked as the player progresses and, by linking a Google account, progress follows the player from one phone to another; this is an option and not an obligation, and the game can be played without registering. Purchases are optional, while everything else is unlocked by playing.
Availability
Skwizzo Block Jam is available on Google Play for Android. No date has yet been set for the iOS version: it will be announced on this site and on the official channels of Quaradur Industries. The project page collects a summary of the rules and the screenshots of the game.
Skwizzo® Block Jam
Our mobile block puzzle: every block has its exit, the hard part is getting there.