No.248 / 280Strategy & systems · Inventory & resources

Deck Thinning

A leaner deck draws your best cards more often; removing can beat adding.

Prototype complexity
Who plays
Solo decisions
Design focus
Optimization · Planning · Randomness
Slay the SpireNo.248Slay the Spire

01The core loop

Action → feedback → next choice
  1. 01Spot weak cards
  2. 02Pay or use events to remove
  3. 03Deck density rises
  4. 04Key cards show up sooner

↻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.

  1. T1

    Turn 1 · The situation

    A 15-card deck holds 5 basic Strikes. Removal costs 75 gold, a rare card 150; you have 160.

  2. T2

    Turn 2 · The player chooses

    The player removes a basic Strike.

  3. T3

    Turn 3 · The feedback

    The odds of drawing the core combo card each turn rise from about 33% to 36%.

  4. T4

    Turn 4 · The next decision

    With 85 gold left and the next removal pricier, the player reassesses the value.

How it plays

Every card dilutes the odds of drawing key ones, so players remove cards at shops, events or special nodes. Removal costs gold or an opportunity and often rises in price each time.

What the player weighs

  • Remove vs buy: the same gold can cut a basic card or add a strong one.
  • Lean consistency vs depth: too few cards can run dry once key ones are exhausted.

02Start small

Quest · 0/3Prototype complexityCompact prototypeWho plays · Solo decisions

Scope is an editorial estimate for the minimum prototype, not the reference game or a production schedule.

03One mechanic, different implementations

Slay the Spire
S

Slay the Spire

P1

Shops offer card removal with a rising fee each time, and some events and relics also remove cards, typically basic Strikes and Defends.

Monster Train
M

Monster Train

P2

Merchants and certain stops along the route offer card purging, competing with duplication and upgrades for limited gold and picks.

The difference worth noticing

Slay the Spire prices removal on a rising scale; Monster Train makes it one of several route services competing for resources.

Case notes are Yoroll editorial summaries; rules may change between versions.

04What could you combine?

Fusion · Original design proposal · not an existing feature
Deck ThinningInventory & resources+

Each removed card leaves a testimony; in deduction stages players reconstruct the case from what remains, and cutting the wrong card loses key evidence.

Prototype this combo in Yoroll

→Follow the next idea

Combat & tactics

Draw–Discard Combat Cycle

Draw a hand, play it, discard it; the deck's cycle is the fight's heartbeat.

Prototype complexity
Who plays
Solo decisions
  1. 01Draw a hand
  2. 02Spend energy to play
  3. 03Discard at turn end
  4. 04Reshuffle and repeat
Slay the Spire · Monster Train
Inventory & resources

Adjacency Bonuses

Where an item sits matters; the same gear can be weak or great depending on its neighbors.

Prototype complexity
Who plays
Solo decisions
  1. 01Get an item with a neighbor effect
  2. 02Try different placements
  3. 03Watch stats change
  4. 04Rebuild around a core
Backpack Hero · Backpack Battles
Inventory & resources

Budgeted Ability Loadout

Plenty of abilities, limited slots: every outing starts with choosing what to bring.

Prototype complexity
Who plays
Solo decisions
  1. 01Collect new abilities
  2. 02Check budget costs
  3. 03Assemble a loadout
  4. 04Adjust after play
Hollow Knight · Transistor
yorollGAMEPLAY ATLAS

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