However, please note that the landscape of gaming apps can change rapidly due to new releases, updates, and shifting trends. Here are three gaming apps that were among the top choices around that period:-

1. Genshin Impact: Genshin Impact is an open-world action role-playing game developed and published by miHoYo. Released in September 2020, the game quickly gained immense popularity due to its stunning visuals, expansive open-world design, and engaging gameplay across multiple platforms, including PC, PlayStation, iOS, and Android. Developed by miHoYo, Genshin Impact gained immense popularity for its open-world action RPG gameplay, stunning visuals, and immersive storyline. It offers gacha mechanics, allowing players to obtain characters and items through a randomized system. Moreover, Genshin Impact offers a gacha-style system to obtain new characters and weapons, fostering a community-driven aspect for team-building and customization.

2.
Among Us: Incredibly popular during 2020 and 2021, Among Us is a multiplayer game that gained widespread attention for its social deduction gameplay. Players work together on tasks while attempting to identify impostors among the group, leading to engaging and suspenseful interactions. The game accommodates 4-10 players in each round, assigning them roles as Crewmates or Impostors. Crewmates must complete various tasks across the map while trying to identify and vote out the Impostors, who sabotage tasks and eliminate Crewmates. On the other hand, Impostors aim to eliminate Crewmates without being caught and sabotage the spaceship to create chaos. Among Us emphasizes communication and deduction, as players discuss suspicions and provide alibis during emergency meetings, where they vote on who they believe is the Impostor. The game's success lies in its social dynamics, as players strategize, deceive, and defend themselves through discussions and arguments.

3. BGMI:  Battlegrounds Mobile India was launched in July 2021 after PUBG Mobile was banned in India due to concerns regarding data privacy and national security. Krafton, the developer, worked on rebranding and making adjustments to adhere to local regulations and address the concerns raised by the Indian government. As of my last knowledge update in January 2022, BGMI stands for "Battlegrounds Mobile India." It is a version of the popular battle royale game PUBG Mobile, specifically designed for the Indian market and developed by Krafton.

Battlegrounds Mobile India was launched in July 2021 after PUBG Mobile was banned in India due to concerns regarding data privacy and national security. Krafton, the developer, worked on rebranding and making adjustments to adhere to local regulations and address the concerns raised by the Indian government.

BGMI essentially retains the core gameplay mechanics of PUBG Mobile, offering a battle royale experience where players parachute onto an island, scavenge for weapons and equipment, and engage in intense battles to be the last one standing. It includes various game modes, such as Classic mode, Arcade mode, and EvoGround modes, providing diverse gameplay experiences.

Please note - that the gaming landscape can change rapidly due to new releases, updates, or shifts in trends. As of my last update, these were some of the top gaming apps, but it's essential to check the current trends and user preferences to get the most accurate information about the current top gaming apps.