there is many ways to advertise here on bitcointalk you should first know your budget for the advertisement, first you have the official auction from bitcointalk which is closed for now but you can wait for an announcement https://bitcointalk.org/adrotate.php?adinfo
then you have bounty campaigns and signature campaigns which are a type of advertising using bitcointalk users with a manager to run that campaign for you. your project is a metaverse play to earn game with tokens so you should find a manager for your campaign and post it on altcoins bounties