The game’s core mode, Attack vs. Defense, sees two teams of five players facing off against each other.
Attackers deploy drones to help formulate a plan before attempting to breach destructible walls, floors and ceilings, while defenders can use barricades to fortify their location and spy cameras and traps to try and gain an advantage in battle.
The game will let players customise a squad of operators, each of whom has their own skillset, weapons and gadgets.
It will feature popular maps from Rainbow Six Siege, including Bank and Border, and PvP game modes like Secure Area and Bomb.
While a release date hasn’t been announced, players can register to participate in upcoming Rainbow Six Mobile tests.
The game has been in development for three years, with support from Ubisoft studios including Winnipeg, Halifax, Paris, Quebec, Bucharest, Kyiv, Pune, RedLynx, Chengdu and Shanghai.
“While the core gameplay, characters, and maps may share similarities with Siege, we’ve rebuilt everything from the ground up with mobile usability in mind,” the game’s development team said in an announcement blog.
“We have put a lot of work under the hood to adapt the Siege experience for mobile devices. This includes an entirely new gameplay control system developed specifically for mobile and extensive optimization of the UI and in-game visual presentation.
“Finally, we wanted to say a word to the Siege fans out there: our goal is not to have you stop playing on PC or console and switch to mobile. We know there is nothing like the adrenaline rush of a close Siege match on the big screen or the precision of a mouse and keyboard.
“Since we can’t carry our monitors with us everywhere, Rainbow Six Mobile will give you the opportunity to play the game you love in short, accessible bursts, while also enabling millions of new players to get the R6 experience.”
Ubisoft claimed in mid-February that Rainbow Six Siege had recently passed the 80 million player mark, having added 10 million players in the previous twelve months.