Hollow Floor is an exploration-based single-sitting Metroidvania inspired by VVVVVV and REDDER. Hollow Floor power-ups are based on adding movesets that will expand the player's ability to explore all three different dangerous biomes. Hollow Floor world is full of secrets and hard challenges that can be tackled at any moment in the game or completely ignored. All you need to finish is to collect any number of power gems to power up the portal and escape this dangerous dimension. Features: - Single-sitting Metroidvania where you can finish it in an hour. - 99 optional coins to collect which provides extra challenges for challenge seekers. - Secret passages and shortcuts to explore the whole world. - A huge world with more than 100 rooms to explore. - Powerups change the way you play and traverse the full world. - Three different main biomes that feature different game mechanics and challenges related to them. - A final biome where the player can test their skills acquired during the previous three biomes. - Finally, the game doesn't contain any time restrictions which allows for more relaxed play.