MadLab - Chain Reaction
BrazLotto × Diamond Game | Minnesota MN-GCB | Sprint 1
Hero Gallery
Overview
About the Game
MadLab - Chain Reaction is a passive 5-reel pull-tab game developed for the Minnesota market. The game delivers pre-determined outcomes and strictly adheres to Minnesota gambling regulations.
| Field | Value |
|---|---|
| RTP | 85.00% |
| Type | Passive 5-Reel Pull-Tab |
| Location | Minnesota USA |
| Canvas | 1024×768 |
| Engine | Xcode / Obj-C / UIKit |
| Spine | v4.2.43 |
Available Denominations
Notes: Removed $0.10 and $0.20 (not divisible by $0.25), removed $10.00 (exceeds Minnesota maximum).
Game Components
- Base Game: 5 reels with electrical curtain reveal
- Power Switch: Animated progression symbol with electrical discharges
- Chain Reaction: 5 flask systems with dynamic selector
- Math System: 18 prize tiers with 85% RTP
Base Game
Main Assets
Additional Assets
Symbol Table
| ID | Image | Name | Category | File |
|---|---|---|---|---|
| 0 |  |
Scientist (Wild) | High Value | p1.png |
| 1 |  |
MadLab Coil | High Value | p2.png |
| 2 |  |
Bio-Flask | High Value | p3.png |
| 3 |  |
Microscope | Mid-High | p4.png |
| 4 |  |
Letter A | Royal Low | p6.png |
| 5 |  |
Letter K | Royal Low | p7.png |
| 6 |  |
Letter Q | Royal Low | p8.png |
| 7 | |
Letter J | Royal Low | p8.png |
| 8 | — | Blank | Neutral | — |
| 100 |  |
Atomic Bubble | Bonus Trigger | bns2.png |
| 200 |  |
Power Switch | Progression | bns1.png |
Peel Reveal System
| Property | Value |
|---|---|
| Type | Horizontal electrical curtain |
| Dimensions | 292×292px |
| Position X | -86 to 840 |
| Position Y | 316 |
| Duration | 0.75s |
Anticipation Effects
| Symbol | Condition | Intensity | Description |
|---|---|---|---|
| Scientist (0) | 4x match on 5th | Medium | Reels vibrate, electricity flows |
| MadLab Coil (1) | 4x match on 5th | Medium | Coil glows, electrical arcs |
| Bio-Flask (2) | 4x match on 5th | Medium | Flask pulses, particles flow |
| Atomic Bubble (100) | Reels 2-3-4 trigger | High | Bubble glows intensely |
| Power Switch (200) | 3x=activates, 4x intensifies | High | Electrical discharges |
Near-Miss Logic
When a player has a near-miss (4 matching symbols), the system activates near-miss logic.
| Effect | Description |
|---|---|
| Fizzle Effect | Electrical discharge gradually diminishes |
| Disappointment Sound | Low, disappointed tone plays |
| Return | Reels return to initial state |
Implementation Guide (Collapsible PDF Pages)
Power Switch System
Overview
The Power Switch (bns1) is an animated 30-frame progression symbol (172×298px) that discharges electricity toward the Atomic Fusion Bubble.
| Count | Behavior |
|---|---|
1–4 symbols | Simple discharges — no multipliers |
5 symbols | Eligible for multipliers |
| Anticipation | Activates at 3 or 4 symbols on reels |
Power Switch Gallery
Atomic Fusion Bubble Stages
| Stage | Dimensions | Description |
|---|---|---|
| Small | 250x250 | Initial bubble state |
| Medium | 342x342 | Intermediate growth |
| Large | 440x440 | Maximum size |
Bubble Behavior
Bubble Behavior Rules
| Rule | Detail |
|---|---|
| Correlation | NOT correlated with Power Switch count |
| Predictability | NOT predictable — pre-determined outcome |
| Explosion trigger | Only on high-value pre-determined tickets |
Reveal Modes
| Mode | Description | Behavior |
|---|---|---|
| EXPLOSION | Bubble stays Large, releases multiplier bubbles, last explodes | Dramatic release sequence |
| MULTIPLIER_RELEASE | Bubble progressively shrinks, no explosion | Gentle fading sequence |
Multiplier Grid
Electrical Discharge Specs
Sprites per reel: 5
Stagger timing: 120ms
Frame rate: 0.4 frames/tick
Implementation Guide (Collapsible PDF Pages)
Chain Reaction (Bonus)
Activation
| Field | Value |
|---|---|
| Trigger | 3× Atomic Bubble (bns2) on Reels 2, 3, and 4 |
| Format | 100, 100, 100 + n |
| Transition | Bonus mode with animation and flask system presentation |
Bonus Assets
Flask Colors
Bonus Transition Timeline
| Stage | Action | Duration |
|---|---|---|
| 1 | bns2 symbol celebration (3 loops) | ~1.5s |
| 2 | Reels exit downward | 1.0s |
| 3 | Control panel exits downward | 0.5s |
| 4 | Left/Right machines exit | 1.6s / 1.4s |
| 5 | Logo fades out | 1.0s |
Flask System
| Flask | Color | Levels | Type | Prize @$1 | Multiplier |
|---|---|---|---|---|---|
| 1 | Red | 2 | LEVEL1 (Base) | $10 | 2x |
| 2 | Blue | 3 | LEVEL2 (Minor) | $20 | 3x [1,2] |
| 3 | Yellow | 3 | LEVEL3 (Major) | $40 | 5x [2,3] |
| 4 | Orange | 4 | LEVEL4 (Super) | $100 | 8x [2,3,3] MIXED |
| 5 | Green | 4 | LEVEL5 (Mega) | $200 | 10x [2,3,5] MIXED |
Additional Bonus Assets
Implementation Guide (Collapsible PDF Pages)
Math & Rules
5.1 Prize Tier Structure ($1.00 Reference)
| Tier | Type | Prize | Deal Count | Combinations | Note |
|---|---|---|---|---|---|
| 17 | 1 | $500 | 0 | Scientists x5 | Autoclose |
| 16 | 1 | $500 | 1 | Scientists x5 | — |
| 15 | 2 | $200 | 0 | CR Mega | Autoclose |
| 14 | 2 | $200 | 1 | CR Mega | — |
| 13 | 1 | $200 | 0 | Coils x5 | Autoclose |
| 12 | 1 | $200 | 1 | Coils x5 | — |
| 11 | 2 | $100 | 4 | CR Super | — |
| 10 | 1 | $100 | 2 | Microscopes x5 | — |
| 9 | 1 | $50 | 4 | Microscopes x5 | — |
| 8 | 2 | $40 | 10 | CR Major | — |
| 7 | 2 | $20 | 35 | CR Minor | — |
| 6 | 1 | $20 | 10 | Mixed High x5 | — |
| 5 | 2 | $10 | 70 | CR Base | — |
| 4 | 1 | $10 | 35 | Royals x5 | — |
| 3 | 1 | $5 | 150 | Royals x4 | — |
| 2 | 1 | $2 | 400 | Royals x3 | — |
| 1 | 1 | $1 | 775 | Royals x2 | — |
| 0 | 0 | $0 | 6002 | — | Loser |
Notes: CSV values in cents. Total tickets per deal: 7,500. RTP: 85.00% (exact)
5.2 Denomination Scaling
| Denom | Code | Calculation | Example ($20 base) |
|---|---|---|---|
| $0.50 | 050 | base × 0.5 | $10 |
| $1.00 | 100 | base (reference) | $20 |
| $2.00 | 200 | base × 2 | $40 |
| $3.00 | 300 | base × 3 | $60 |
| $5.00 | 500 | base × 5 | $100 |
Minnesota Compliance: All prizes must be divisible by $0.25.
5.3 Combo ID Map
| Combo ID | Symbols | Description |
|---|---|---|
| 11 | Scientist (0) | Wild |
| 12 | MadLab Coil (1) | Lab coil |
| 13 | Bio-Flask (2) | Biological flask |
| 14 | Microscope (3) | Microscope |
| 15 | Mixed High (1,2,3) | Any high-value combo |
| 16 | Royals (4,5,6,7) | A, K, Q, J |
| 100 | Atomic Bubble (100) | Chain Reaction trigger |
5.4 Watermark Rules
Base IDs:
- Atomic Bubble = 100
- Power Switch = 200
Rightmost Symbol Watermark: On bonus triggers, the rightmost symbol carries the level watermark.
Variants:
- 101 = Base ($10)
- 102 = Minor ($20)
- 103 = Major ($40)
- 104 = Super ($100)
- 105 = Mega ($200)
Power Switch Note: Always uses base 200 (v2.4 fix). Watermarks only apply to winning Atomic Bubble symbols.
5.5 JSON Outcomes
Total Outcomes: 150 (5 levels × 30 variations)
Fields:
- variationId
- totalWinAmount
- explosionType
- stepAwards
- multiplier
- multiplierSequence
- revealMode
- revealFrames
- flaskOrder (30 permutations)
- selectorStops
5.6 Near-Win Logic
| Context | Behavior |
|---|---|
| Base Game | 4-match setup triggers anticipation on 5th reel. Miss → fizzle effect. |
| Bonus | Competitor flasks approach but never complete. selectorStops ensures 2+ partial fills. |
| Audio | Low hum at 3 matching, escalates at 4 matching. |
5.7 Ticket Format
ticketType: 0=Loser, 1=Base Game Win, 2=Chain Reaction Bonus
Format: {(sym1,sym2,sym3,sym4,sym5)|(prizeInCents,CHAIN_REACTION,LEVELx,INDEXy)|(baseprize,totalprize);tierNum}
Example: {(0,0,0,0,0)|(5000,0,0,0)|(500,500);17} = Scientists x5, $500 prize, Tier 17
5.8 Financial Summary
| Tickets per Deal: | 7,500 |
| RTP: | 85.00% |
| PBC Tiers: | 15-17 |
| Jurisdiction: | Minnesota MN-GCB |
Steven Q&A
Email Questions (March 2026) - 5 Key Items
Removed $0.10 and $0.20 denominations for not being divisible by $0.25 (Minnesota compliance). Kept: $0.50, $1.00, $2.00, $3.00, $5.00 USD.
Removed $10.00 denomination for exceeding the Minnesota maximum. $5.00 is now the highest denomination available.
Power Switch now always uses base ID 200. Watermarks (101-105) apply only to the Atomic Bubble symbol on winning combinations. This differentiates symbols/prizes as required.
Removed: triggerSymbols. Added: flaskOrder (30 permutations), selectorStops (ensures 2+ partial fills in bonus). Total: 150 outcomes (5 levels × 30 variations).
Documentation rewritten as a "developer choreography guide": clear symbol→anticipation→reveal flow, near-miss effects, bonus sequences with selectorStops, ticket formatting (5 symbol IDs), CSV/JSON requirements, and outcome usage.
Symbols
Base Game Symbols
Bonus Symbols
Watermark Variants
| ID | Name | Prize Level | Base Game Prize |
|---|---|---|---|
| 101 | Atomic Bubble (Base) | CR Base | $10 |
| 102 | Atomic Bubble (Minor) | CR Minor | $20 |
| 103 | Atomic Bubble (Major) | CR Major | $40 |
| 104 | Atomic Bubble (Super) | CR Super | $100 |
| 105 | Atomic Bubble (Mega) | CR Mega | $200 |
Templates & Assets
Base Game Assets
Power Switch Assets
Bonus Assets
Symbols
Timeline
Sprint 1: Mar 30 - Apr 12, 2026
Daily Standups & Meetings
Documentation & References
Weekly Prep: Weekly Prep
Visual Reference: Visual Reference
Sprint Timeline
Development of Base Game mechanics and Power Switch system. Symbol implementation, peel reveal system, and anticipation effects.
Chain Reaction bonus feature development, flask system, selector mechanics, and comprehensive testing of all game elements.
Final testing, bug fixes, and delivery of complete MadLab - Chain Reaction game implementation.