The best tools to equip in Totally Safe Moon Project are the gravity gun, the magnet, the zipline and the hook, in that order. The tool grid holds eleven slots, but only four tools fit on the hotbar at a time in the numbered slots 1 to 4, so something always stays behind — and the gravity gun is the one you never take off.

Totally Safe Moon Project best tools to equip: the four hotbar slots

  1. Gravity gun. It is the only tool you start with, the tool screen always shows it equipped, and every prop in your tower has to be carried with it. Its upgrade row is also the first item on the upgrade list.
  2. Magnet. Its prompt reads "Pull Player to you", so it drags a teammate toward you — the answer to a player stranded below the stack.
  3. Zipline. The descent tool for a tower several hundred metres tall, where climbing back down is the problem.
  4. Hook. A grappling hook bound to the left mouse button, taking the fourth slot.

The gravity gun guide has the full prompt list for the claw, which is the tool you will be holding most of the run.

The grid behind the hotbar

The "Select your Tools" grid next to the garage terminal is where the eleven slots live. Unlocked tools sit in the top row and get a red X over the icon when they are equipped, two slots are still empty, and six more are behind padlock icons until you unlock them.

Alongside the gravity gun, the magnet and the tablet, the grid also holds the zipline, the speed totem and the oxygen totem once you have paid for them — which is covered in the upgrades guide.

Which tool you need for what

The tool in your hands decides which prompt you get: "Hook" for the grappling hook, "Use Zipline" for the zipline, "Pull Player to you" for the magnet, and "Interact" on the signboards and the garage terminal.

Two jobs are worth planning your slots around:

  • Fighting off a saucer. The gravity gun is also a weapon — its Shoot mode is what takes a UFO down, so it has to be in your hands rather than on the floor. The UFO guide has the shot.
  • Hauling the laser to the top. The laser is a prop like any other and travels with the gravity gun, so keep that slot filled for the last climb too.