Holding capacity is finite
Each board grants exactly the hold-short clearances a clean solution needs — sometimes three for thirty aircraft. Park the wrong one and it is not there for the aircraft that needed it.
devbynight
Ground Control. Every aircraft is pointed somewhere.
You are ground control on a busy apron. Tap an aircraft and it taxis the way its nose points, straight out to the runway — if the lane is clear. It usually isn't. Aircraft cannot turn, cannot reverse, and a plane in the way is a plane in the way.
When a lane is blocked you pull an aircraft forward and hold it short of the bars, out of somebody else's way. That is the verb no other puzzle in this category has — and the one you can spend badly.
In development
Each board grants exactly the hold-short clearances a clean solution needs — sometimes three for thirty aircraft. Park the wrong one and it is not there for the aircraft that needed it.
Spend the last clearance badly and nothing can move. Not a slow loss, not a timer running out — a gridlocked apron with no line left, and the only way on is to start it again.
Each level is solved by exhaustive search before it ships, so a board that looks impossible always has a line. They are ordered by how well careless play does against them, not by how long they are.
Push and start. Hold short of the bars. Give way at a crossing. The clearances are the ones a real ground controller issues, and here they mean what they mean on a real airfield.
The apron cycles as you play — floodlit night freight, first light, a bright midday push. The same board reads differently under a different sun.
Think about a board for as long as you like, put it down mid-thought, come back to it. The whole game runs offline and there is nothing to sign in to.
The game is free and has no in-app purchases, so ads pay for it. They stay off the board: no banner ever covers a puzzle, nothing interrupts you mid-solve, and rewarded video only plays if you choose to tap an offer. A stranded board is never sold a rescue, because handing back hearts would not fix what you actually ran out of.
What that costs you in data is set out plainly in the Privacy Policy. The short version: no account, no analytics, and your progress never leaves your phone.
Stuck, or something is broken? Support covers the common ones, and devbynight1@gmail.com reaches a person.