MilSims · Bulgaria, Europe & UK
The MilSims worth planning your year around – from Bulgaria’s own Viper, Razor Wire, Battle for Tartaria and ATLAS to 4,000-player airfield battles in Germany, 50-hour games in the Czech Republic and the UK’s biggest airsoft festival. 13 games in 8 countries, each with its own page. Looking for regular game days? See Bulgaria’s fields.
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4 games
Dobroslavtsi, Sofia · Bulgaria
A 40-hour weekend MilSim on the former Dobroslavtsi air base just outside Sofia, with three factions – and regularly described as the biggest MilSim event in Bulgaria.
Near Dragoman, Sofia Province · Bulgaria
One of Bulgaria’s longest-running MilSims: a 36-hour large-scale military simulation across the huge terrain of Viskyar mountain west of Sofia.
Uzundzhovo, Haskovo · Bulgaria
A 24-hour non-stop MilSim for 400+ players on the disused runways and aprons of the former Uzundzhovo air base near Haskovo.
Bosnek, Pernik · Bulgaria
A 37-hour MilSim on a former military unit near Bosnek, at the foot of Vitosha – a newer series running several operations a year.
9 games · 7 countries
Mahlwinkel, Saxony-Anhalt · Germany
Billed as the largest airsoft match in the world: thousands of players in factions and platoons on a 120-hectare former Soviet airfield, combined with a full festival experience.
Ralsko, Liberec Region · Czech Republic
A 50-hour, day-and-night MILSIM on a former military training area, voted the best airsoft event with more than 500 players eleven times in a row.
Ringwood, Hampshire / Dorset border · United Kingdom
The UK’s biggest airsoft weekend – two full game days, camping, a bar and live music – and the latest winner of the Players’ Choice ‘Best Airsoft Event’ award.
Sollefteå, Västernorrland · Sweden
Sweden’s legendary MILSIM that mixes airsoft with LARP – military factions, civilians, gangs and traders, airstrikes, bunkers and airsoft tanks across a huge game area.
Jämsä, Central Finland · Finland
Finland’s biggest MILSIM: four days of continuous play on a former Finnish Defence Forces training area, with dozens of off-road vehicles.
Busko-Zdrój, Świętokrzyskie · Poland
A 48-hour non-stop airsoft festival in the quarries of southern Poland, built around good fun and a loose scenario.
Ralsko / Mimoň, Liberec Region · Czech Republic
A Czech club with 25+ years of history running three big scenario games a year – from ‘Operation Kandahar’ to cartel wars in ‘El Protector’ – each drawing around a thousand players.
Mârșa / Avrig, Sibiu County · Romania
One of Romania’s most important MilSims: around 40 hours of non-stop play for 700+ players on a 500-hectare former military base in the Carpathian foothills near Sibiu.
Constanța, Black Sea coast · Romania
Romania’s Black Sea coast MILSIM: a 16-hour day-and-night operation at ACC Airsoft Hub in Constanța – the closest big international game to north-east Bulgaria.
FAQ
Dark Emergency at the former Mahlwinkel airfield in Germany is billed as the largest airsoft match in the world, with up to 3,000–4,000 players. Border War in the Czech Republic has hosted more than 2,000 players, and the UK’s National Airsoft Festival brings together 2,000–3,000.
Viper, played at the former Dobroslavtsi air base near Sofia, is often described as the biggest MilSim in Bulgaria. Battle for Tartaria has gathered 400+ players at Uzundzhovo airfield, and Razor Wire saw 374 players respond to its twelfth edition.
Most run for 24 to 50 hours over a weekend: Battle for Tartaria is 24 hours non-stop, Razor Wire about 36, ATLAS about 37, Viper and OVERLOAD around 40, and Border War 50 hours, day and night.
Yes – the big European games are international: Border War draws players from across Europe and beyond, Battlegroup and OVERLOAD welcome teams from abroad. Register through the organiser’s website or Facebook page linked on each game’s page.
Rules differ by country and by organiser. Transport replicas unloaded in a closed bag or case, check the local laws of every country you drive through and read the event’s rules on replica transport and power limits before you leave.
New gameplay every month
Full games, gear unboxings and loadout setups – filmed on the field with helmet, scope and action cams.
