News
Sports marketing on matchday: cases with numbersWhat works on matchday: breakdown of tools with our measured numbers. 16.6% engagement on 9,000 spectators, 32% promo conversionRead
Corporate contests without props: mechanics for any room6 mechanics for corporate events that require no props: with instructions, timing and an honest breakdown of when contests do not workRead
Corporate event ideas: 15 formats from quiz to light showSelection of corporate event formats grouped: intellectual, active, creative and show. Which companies they suit and what they costRead
Show program for a corporate event: what to choose and how much it costsOverview of show numbers for corporate events with real prices: cover bands, LED artists, illusionists, flair bartending and a show the whole room createsRead
Immersive show: what it is, formats and pricesA breakdown of immersive show formats: plays, theatrical dinners, exhibitions and a show created by the audience itself. Real prices and how to chooseRead
Unusual team building: a show the team creates itselfA team building format with no props or rehearsals: the whole hall becomes one team and creates a light show with their phonesRead
A flashlight light show for corporate events, weddings and partiesWe control the flashlights of guests’ phones via ultrasound and turn the hall into a synced show in time with the musicRead
New advertising tools at events in 2026Banners and logos no longer work. How brands embed into the viewer experience via phone and get measurable resultsReadGROMKA.SHOW
How to attract sponsors: what to fill a sponsor package with besides logos
World Cup 2026: three infographics on group stage betting9 million on a goal, odds 1.09 and 0:0, average total 1.0 vs 4.3: CIS-region betting data for the group stageRead
Synchronized phone light show: how crowd lighting works without wristbandsComparison of audience light control technologies: PixMob IR wristbands, CUE sound, and GROMKA ultrasound. Accuracy, cost, logistics and post-show engagementRead
Interactive at a conference: how to engage the hall without handing out equipmentAfter lunch the hall dies, polls help little. How light from phones brings everyone into one picture and works as an energizer without appsRead
A flashlight show at the 2026 World Cup. Gromka.show can do the same, and betterCUE launched a browser flashlight show at the 2026 World Cup. We do the same and more: ultrasound, drawings, waves – and already have cases to showRead
Interactive at a wedding: what works and what irritates guestsGuests do not like contests with pulling on stage. How to engage everyone without awkwardness and without standing upRead
How to surprise guests at a corporate event: mechanics without props or rehearsalsGuests are tired of contests and hosts. How to engage the hall without pulling people on stage and complex preparationRead
Gromka.show – winner of the SportTech Accelerator Skolkovo 2026Out of 253 applications the project became one of 15 winners and took fifth place at the demo dayReadGROMKA.SHOW
Event marketing: why banners lose to an experience on the phone
Lead generation at an event: how to collect viewer contacts without promotersPromoters with tablets do not work. The show engages the whole hall, the draw and chat-bot collect the database with high conversionRead
Olympic champion Pavel Kolobkov takes part in a flashlight showThe Olympic champion and former sports minister shared a shot from the show where he takes partRead
A collaboration idea: food delivery to your seat right after the stadium showAfter the show, every viewer could get a promo to order food straight to their seat in the standsRead
How to organize a pre-match show: step by step, with cases and pricesWhat a club needs for a pre-match show: QR on the scoreboard, track in the sound system, one minute in the script. Real numbers from Samara Arena and prices from 30,000 ₽Read
Wristbands like Coldplay: how much they cost and how to get the effect without themColdplay spends hundreds of thousands of euros on wristbands. How to achieve the same light effect without purchasing, distribution and logisticsRead
Show on city day: how to engage the square without fireworks or dronesFireworks are banned, drones are expensive and weather-dependent. How to engage the entire square in a light show without pyrotechnicsRead
What to replace fireworks with: wedding and party finale without pyrotechnicsFireworks are banned in many places, and cold fountains or smoke only work on stage. How to create a real grand finale for the whole hall without permits or hazardsRead
Roman Orlovskiy, founder of Gromka.show – on football, theatre and interactive show technologyBehind every tech project there is a person with an interesting story. Today it is RomanRead
Light show at a corporate event: formats, prices and how to chooseComparison of light show formats for corporate events: from LED performers to a hall-wide flashlight show. Real prices and selection criteriaRead
Drone show alternative: how much the sky costs and how much the standsDrone shows start from hundreds of thousands and depend on weather. Our technology delivers a similar effect on the stadium in minutes, indoors and with post-show promoRead
Pre-match performance with flashlights: Krylya Sovetov vs CSKASamara again: the stands of Samara Arena formed a light picture before the CSKA gameReadGROMKA.SHOW
A technical success: controlling flashlights right from Telegram
Flashlight light show at Nikolay Grinko’s concertThe audience’s flashlights flickered to the music and became part of the concert numberReadGROMKA.SHOW
Fan engagement numbers in a flashlight show
A DJ controls the room’s flashlights live: a test at RetroBunker FestAt DJ Tonio’s set the room’s flashlights were controlled straight from the pads, to the musicRead
Light show and prize draw at Krylya Sovetov vs LokomotivA prize draw was added to the flashlight show, and the number of participants grew noticeablyRead
Gromka.show: how to turn thousands of phones into a tool for working with the audiencePress about us: the project turns the room’s smartphones into a single controllable communication channelRead
Gromka.show pricing: you pay only for those who took partA transparent model: you pay for real participants, with no equipment rentalRead
Pre-match light show at the stadium: Krylya Sovetov vs OrenburgThe first flashlight show launch at Samara Arena before a cup matchRead
A colour show with phone screens at a Spartak matchRed-and-white smartphone screens formed a single picture across the stands at a football matchReadGROMKA.SHOW
How the light show works: flashlight sync by ultrasound, with no app
An ad in the viewers’ browser right after the showAfter the show the same viewers see a sponsor promo or a draw: an ad slot with high conversionReadGROMKA.SHOW
GROMKA.SHOW now has its own song on Yandex Music
Flashlight light show in a planetarium, even when the internet is jammedThe show ran with a jammed internet connection: phones synced by sound, not by the networkRead
Immersive light show in a theatre: the play “A Romance with an Emigrant”The audience at TChK Theatre became part of the play: phone flashlights turned the hall into a light stageRead
Show at a New Year corporate eventHow to make a New Year corporate event memorable: light show instead of standard programRead