WHIRLWIND: The Last Egg is a single-player fantasy strategy game we are building in-house, combining tower defense, territory expansion and tactical squad control into one persistent campaign. Players build a sanctuary around the last dragon egg, defend it against increasingly dangerous storm creatures, expand their territory and command a specialised team of defenders as the egg evolves through six powerful forms. The game, visual identity and supporting materials are all IDAEVIA work, developed from the initial concept to the playable prototype.