If you're looking for something to replace Inworld Arcade, Charstar is a good alternative. This virtual character platform lets you build, find and chat with a vast range of characters, each with their own personality, history and abilities. It's got a large library of characters with detailed descriptions and supports lifelike, dynamic conversations, so it's good for people who like interactive fiction and role-playing.
Another good option is DreamPal. The chat platform lets you chat with customizable, artificially intelligent virtual friends in a roleplaying setting. You can create your own DreamPals by uploading photos and defining their personalities, voice and traits. The AI system learns from you over time, so the chat becomes more personalized. It supports a variety of chat interfaces and has a premium version with features like unlimited chat and automated greetings.
If you want something with an anime twist, korewa.AI is worth a look. The chat platform uses AI text models trained specifically for anime characters, so you can create your own anime friends with specific personalities and emotions. You can share your own characters publicly and explore a large library of other people's creations, a potentially fun way to get into anime.
Last, RolePlai is another general-purpose option. It lets you build your own interactions with characters and personas you create yourself, with advanced AI technology. The app supports AI face and voice chat, AI art generation and an "AI Adventures" feature that lets you steer a story with your choices. It's available on iOS and Android and has a RolePlai Pro version with more features.