Here's a list of the most popular free games on that iOS store that have MFi controller support.
#11: Bike Baron Free (4,3 stars)
Genre: Sports simulator
Similar to games like: Mini motor racing
"What happens when you put the developers of Minigore, Death Rally and Aqua Globs together with the composer of Angry Birds and Trine? PURE MAGIC. Bike Baron is a ride you will never forget!"
#10: Afterpulse - Elite Army (4,6 stars)
Genre: 3rd person shooter
Similar to games like: PUBG, Fortnite
"Enjoyed by over 14 million players, Afterpulse has received tremendous acclaim as one of the best and most realistic TPS (third person shooters) for mobile devices on the market."
#9: Lineage 2: Revolution (4,5 stars)
Similar to games like: Final Fantasy XII and Final Fantasy XIV
"Lineage 2: Revolution is a groundbreaking, new online role-playing game that brings top-quality visuals, a massive open-world, and large-scale PvP battles to life on mobile devices. Players can finally experience what it truly means to have a gorgeous, fully-featured, persistent world MMORPG that can be enjoyed alongside millions around the world, all within the palm of your hands!"
#8: Gangstar Vegas (4,6 stars)
Genre: Third person action-adventure
Similar to games like: Grand Theft Auto
"Roll up on a dangerous trip through the City of Sin in the latest grand episode of the acclaimed open-world shooting action series!"
#7: Life is Strange (4,0 stars)
Genre: Choice-based story
Similar to games like: The Wolf Among Us, The Walking Dead
"Life Is Strange is a five part episodic game that sets out to revolutionize story-based choice and consequence games by allowing the player to rewind time and affect the past, present, and future."
#6: Flipping Legend (4,8 stars)
Genre: Third-person action Similar to games like: Flappy Bird
"Unleash the power of your fists, spells and weapons in this pattern-based adventure."
#5: Xenowerk (4,4 stars)
Genre: Top-down shooter
Similar to games like: Hotline Miami
"Play the first part for free. Get access to the full game with an in-app purchase. Be the last hope against the mutant infestation. Enter the aftermath of a scientific experiment gone horribly wrong."
#4: Jetpack Joyride (4,5 stars)
Genre: Side-scrolling runner
Similar to games like: Sonic the Hedgehog
"It's time to join Barry Steakfries and equip the coolest jetpacks, suit up in stylish costumes and ride crazy vehicles in his endless running quest to beat the scientists to the end of the lab."
#3: It's Full of Sparks (4,6 stars)
Similar to games like: Mario
"It's Full of Sparks is a beautiful platforming experience about the life of a firecracker. Embark on a journey to find The Old One, a mythical firecracker whose fuse has never been lit. But what is life without sparks?"
#2: Asphalt 8: Airborne (4,7 stars)
Similar to games like: Forza, Gran Turismo
"INTENSE ARCADE GAMEPLAY: Feel the thrill of gravity-defying racing across 50+ high-speed tracks!"
#1: Fortnite (4,6 stars)
Genre: 3rd person shooter
Similar to games like: PUBG, Apex Legends, Realm Royale
"On mobile, Fortnite is the same game you know from PlayStation 4, Xbox One, PC, Mac, Switch. Same map, same gameplay, same weekly updates. Build your fort as you battle to be the last one standing. Jump in and squad up with friends around the world or in the same room!"
Are you suprised to see Fortnite as the #1 free game for controllers on iOS?
Not sure which controller to use? The Nimbus+ wireless controller has official Apple-licensed connectivity, and comes with a handy iPhone mount, which would be ideal for any of these games.
Hopefully you found a new game to check out from this list. Good luck!