Fuse Two Power Pieces
Two special pieces collide and become something new, not just the sum of both.
- Prototype complexity
- Who plays
- Solo decisions
- Design focus
- Planning · Risk · Optimization
01The core loop
Action → feedback → next choice- 01Create one power piece
- 02Create a second
- 03Bring them together
- 04Trigger a combined effect
↻Feedback changes the situation — the next round starts from there.
Walk through one round
A simplified design example. Situations and numbers illustrate the mechanic, not exact rules from a reference game.
- T1
Turn 1 · The situation
3 moves left; a striped candy and a wrapped candy sit two cells apart.
- T2
Turn 2 · The player chooses
The player spends one move bringing them adjacent, then swaps them.
- T3
Turn 3 · The feedback
A giant three-row, three-column cross fires, clearing 14 target blockers.
- T4
Turn 4 · The next decision
The final move only needs to clear 2 remaining blockers.
How it plays
When two special pieces are swapped together, the pair produces a new effect such as a cross clear, a bigger blast or a board-wide conversion. Pair power varies widely, so players learn the combo table and work to bring pieces together.
What the player weighs
- Use alone vs wait to combine: combos hit harder but take moves to set up.
- Best pair vs available pair: waiting for the ideal combo may waste the moment.
02Start small
Scope is an editorial estimate for the minimum prototype, not the reference game or a production schedule.
03One mechanic, different implementations
Candy Crush Saga
Striped plus wrapped makes a giant cross clear, and two color bombs swapped together clear the entire board, among other distinct pairings.
Toon Blast
Tapping a booster adjacent to another fuses them into stronger effects, such as two rockets forming a cross or a rocket and bomb clearing a wider band.
The difference worth noticing
Candy Crush requires a swap to combine; Toon Blast just needs adjacency and a tap, lowering the barrier.
Case notes are Yoroll editorial summaries; rules may change between versions.
04What could you combine?
Make the combined effect depend on trigger order, A then B clears horizontally, B then A vertically, so players read sequencing.
Prototype this combo in Yoroll→Follow the next idea
Fill a Line to Clear It
Space is the only resource: fill a line to reclaim it, or get crowded out.
- Prototype complexity
- Who plays
- Solo decisions
- 01Read current and next piece
- 02Choose where to place it
- 03Full lines clear space
- 04Shape the gaps for later
Merge Three, Climb a Tier
Put three identical things together and they become the next tier up.
- Prototype complexity
- Who plays
- Solo decisions
- 01Get a low-tier item
- 02Place it beside matches
- 03Three merge into next tier
- 04Plan higher-tier merges
Shape Matches Make Power Pieces
Beyond simple threes, L-shapes, fours and fives forge powerful special pieces.
- Prototype complexity
- Who plays
- Solo decisions
- 01Spot a special pattern
- 02Swap to form it
- 03A power piece appears
- 04Detonate it at the right time