Worlds and bosses

A run is nine rounds: three worlds of two ordinary rounds and a boss. The boards grow from 6×6 to 9×9 and the target score rises every round.

The Salon (rounds 1-3)

Warm paper and a music box. Plain 6×6 boards to learn the order of play.

The Organ loft (rounds 4-6)

Dusk-blue. The boards grow to 9×9 and round 6 is a heavier boss.

The Concert hall (rounds 7-9)

Deep red velvet, 9×9 boards, and the Finale in round 9: two boss rules at once.

Boss rounds

Which bosses a run gets follows from its seed, and the game shows them from the first move. Round 3 is a light boss, round 6 a heavy one, and the Finale combines two rules the run has not seen yet.

• Mirror: Both diagonals hold every digit once.
• Cornerer: The digit never sits in a corner.
• Mute: Blocks do not raise the multiplier.
• Hurry: Three moves fewer; the target is lower too.
• Fade: The multiplier drops x0.3 after every move that finishes no area.
• Offbeat: Every second move scores half.
• Silence: The board does not show which areas a move finishes.
• Maestro: Only figures raise the multiplier; each figure adds x2 extra.
• Strict hand: Your first wrong move costs three moves.

Instruments

Once you have won a run you can start with another instrument. Each changes how you play; none is bought.

• Music box: The standard game.
• Metronome: One extra move every round, but your multiplier starts at x0.5.
• Organ: Blocks add x3, rows and columns x1.5.
• Violin: Digits 5 and up score one and a half times, lower digits half.
• Timpani: Start with a relic of your choice; the score offers one relic fewer.
• Tuning fork: A wrong move ends the round, but every move scores x1.5.

Opus

Eight steps of difficulty per instrument. Every step adds a rule on top of the ones before it, and never changes the board.

1. The standard game.
2. Targets 8% higher.
3. Boss rounds have one move fewer.
4. The score offers one relic fewer after ordinary rounds.
5. Targets another 8% higher.
6. A wrong move costs two moves.
7. At most six relics.
8. The Finale has three rules.

Endless

After round nine you can go on. Each round the target rises by 15 percent on the last board type.