円環の理 大運動会 is a game developed by Aniplex Inc. It features the magical girls from "Magia Record: Puella Magi Madoka Magica Side Story" competing for high scores in three mini-games. Players can choose from up to 11 different magical girls as they progress through the game.

The first mini-game, "Escape from Despair! Heart-Pounding Race," requires players to evade approaching witches. Players must rapidly tap the screen to avoid falling when running at top speed.

In the second mini-game, "Reach for the Stars! Kyubey Toss," players spin a hammer with Kyubey's face and try to throw it as far as possible. Power and angle control are crucial.

The third mini-game, "Defy Fate! Tower-Toppling Witch," challenges players to knock down towering witches. It may be easier to defeat the witches if their minions are eliminated first.

The game is available for iPhone and requires iOS 9 or later. It is recommended to play on iPhone 6/6s/6 Plus/6s Plus/7/7 Plus/X/Xs/XR/iPad mini. Please note that the game's performance may vary on different devices.