Giro Games 
The Tiger That Ate Brazil
A single 3x3 slot became so dominant in Brazil that its nickname entered the national language. The story of the tigrinho is the clearest…
slot machine design - Giro Games
Medal Games: Japan’s Slot Machines Where Winning Buys You Nothing
In Japanese arcades, whole floors are given over to slot and pusher machines played with metal medals that cannot be exchanged for anything. Millions…
The Kugishi: Japan’s Craftsmen Who Tuned Machines With a Hammer
Before software controlled everything, a pachinko machine’s payout was set by the angle of hundreds of brass nails — adjusted nightly by a specialist…
The Risk Ladder: Germany’s Gamble Feature as National Ritual
Ask a German player about slots and the word that comes back is Risikoleiter — the climbing risk ladder where you double or lose…
Sixty Years Illegal, Then Everywhere: The Spanish Tragaperras
Spain banned gambling in 1924 and kept the ban through the Franco era. When the machines were legalised after the transition to democracy, they…
Setting 1 to 6: The Japanese Slot Machine With a Dial Inside
Every pachislot cabinet in Japan contains a physical setting from 1 to 6 that the hall chooses each morning. The same machine can be…
€12.50 an Hour: Belgium Regulates the Speed of Losing
Belgian café gaming machines are governed by a metric almost no other country uses: the average hourly loss. Two machines per bar, €12.50 per…
The Physics Institute That Approves Slot Machines: Germany’s PTB Pipeline
In Germany, cash gaming machines are type-approved by the Physikalisch-Technische Bundesanstalt — the same national institute that keeps the country’s atomic clocks. Here is…
Rainbow Means Jackpot: The Color Grammar of Japanese Machines
Japanese pachinko and pachislot machines speak to players in a strict color code — white, blue, yellow, green, red, gold, rainbow. It is the…
Slot Machine Themes: The Complete Guide (From a Studio That Builds Them)
Slot machine themes are the first thing a player sees and the last thing they remember. Before anyone checks RTP or volatility, they pick…
How an original slot game is made: from GDD to release
How a slot game is made at Giro Games: GDD, math and simulation, art and animation, development and post-launch updates.
Midas Golden Era: behind our flagship mythology slot
Behind Midas Golden Era — the flagship mythology slot by Giro Games: golden-touch mechanics, 96.05% RTP and 15,000× max win.