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Opalin Play
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Block Foundry cover art: red, green, purple, yellow and blue paper blocks in a layered paper tunnel
Out nowStake Engine

Block Foundry

By Opalin Play

A papercraft block factory where every win makes its cell worth more.

Five or more bricks of one colour pay, leave the board and double the cell under them. New bricks fall into those cells, so a good round keeps getting richer. Multiplier stamps can land before the count, and a full hopper drops a giant block over the whole board.

Sign-up code Opalin How it works
RTP
96.35%
MAX WIN
50,000×
Grid
6 × 8
Wins
Groups of 5+
Game modes
7
Top cell
×256

A ROUND IN 4 PICTURES

How Block Foundry plays

  1. Match 55 or more bricks of one colour touching by a side win. Diagonals do not count.
  2. The cell doublesWinning bricks leave and their cell doubles, up to ×256. The cell keeps its value until the round ends.
  3. New bricks fallBricks above fall and new ones drop in. A new group pays with the doubled cells.
  4. Fill the hopperEach winning brick fills the hopper. At 65, a giant block covers the board and splits into 48 bricks of one colour.Base game and Block Reserve.
The 6 × 8 board at rest. Premium gems turn like coins.

Seven bricks

Red brick
Blue brick
Green brick
Yellow brick
Coral — orange
Royal — light purple
Pearl — white

SPECIAL PIECES

ChargeAdds +1 to every cell before the count (+2 in Block Reserve).
RelayTakes the colour of the biggest group next to it.
Multiplier stampsIn the base game, 1 to 3 stamps can land on bricks: their cells become ×2 / ×3 / ×5 / ×10.About 1 round in 4
SCATTERS3, 4 or 5+ on the first board start a bonus.
Cube figuresA figure drawn in its exact colours pays 3× to 2,000× the bet, times the average of its cells.

Bonus ladder

3 bonuses to trigger

SCATTERS on the initial board trigger a bonus. Bonus rounds need no additional bet.

The Mega Blocks bonus world: a paper factory street with giant blocks, a gantry crane and a conveyor belt at sunset

3 SCATTERS

Block Reserve

Free rounds
8
Cells start at
×2

+2 Charges and collection progress kept during the bonus.

4 SCATTERS

Mega Blocks

Free rounds
6
Cells start at
×4

One Mega Block in every round.

5+ SCATTERS

Mega Blocks

Free rounds
6
Cells start at
×8

One Mega Block in every round.

In Standard, about 1 round in 130.

DURING A BONUS

  • Free rounds: no extra bet.
  • Cells keep their value from round to round, up to ×256.
  • No retrigger: the number of rounds is fixed.

BONUS MENU

7 ways to play

Modes that stay on

Standard
1×

The base game. A natural bonus comes about once every 130 rounds.

Bonus+
1.25×

Natural bonuses about 1.75 times as often. Stays on until you turn it off.

Bonus Hunt
3×

Natural bonuses about 5 times as often. Stays on until you turn it off.

Bonuses to buy

Mega Blocks spins
50×

One spin · a Mega Block of any colour · cells at ×2

Block Reserve
100×

8 rounds · cells start at ×2. +2 Charges and collection progress kept during the bonus.

Mega Blocks
400×

6 rounds · cells start at ×4. One Mega Block in every round.

Masterpiece
1,000×

10 free rounds · cells start at ×16 · figures on the board

Costs are multiples of the base bet. Every mode has the same RTP: 96.35%. A bonus from the menu starts on the next SPIN, with a single debit.

MASTERPIECE

Masterpiece

Masterpiece costs 1,000× the base bet. It plays 10 free rounds; every cell starts at ×16.

Cell multipliers stay between rounds, double with each win and gain +1 per Charge, up to ×256. They reset to ×1 when the bonus ends.

In 2 to 5 of the rounds, a complete figure is placed on the starting board, the first within the first 3 rounds. A figure pays its fixed value times the average multiplier of its cells: here, at least 16 times its value.

The Rocket only appears on a board where its cells average at least ×25: it then awards the maximum win, 50,000× the base bet, and the bonus ends.

No extra rounds can be won. The bonus ends after 10 rounds or when the maximum win is reached.

Block Foundry on a phone in portrait

On every screen

Laid out for the phone in your hand

In portrait the board fills the screen, the hopper gauge sits just above it and every control is within thumb reach.

  • Rules in four tabs, with amounts shown for the current bet
  • 17 languages, including right-to-left Arabic
  • Normal, Fast and Turbo speeds
  • Shareable replays that never touch the balance

Block Foundry

Only on Stake

Play it on Stake, on desktop or phone.

Opalin

18+ only, where the law allows. Please play responsibly.

Studios

More games by Opalin Play

Our second game is on the drawing board.

Next title

In development

Block FoundryOpalin Play

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Block Foundry50,000×max win · RTP 96.35%
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