Phosfi
UpRoom Games LLC Developer
UpRoom Games LLC Publisher
1970-01-01 Release
🎹🖱️Keyboard + Mouse
🕹️ Partial Controller Support
🎮 Full Controller Support
No user reviews
(0 reviews)
Phosfi Demo Update - 4/30/25Patch Notes
This update aims to bring some more features to the demo as well as keep the systems in line with the upcoming full release of Phosfi.
Detailed Changes
- Updated character movement physics and input response.
- Added Wave Slash special ability.
- Added additional rest sequence when sleeping in Sanctuary Rooms.
- Added new visual and musical effects to collecting power-ups
- Updated visual and audio effects for boss encounters.
- Stability improvements and small bug fixes
[ 2025-04-30 15:25:58 CET ] [ Original post ] Phosfi Demo Update - 3/1/24A new update for the Phosfi Demo is now live!
Patch Notes
Features
- Updated art assets in temple areas
- Updated movement acceleration
- Updated in air control slightly
- Adjustments to momentum conservation to make motions feel less floaty
Bug Fixes
- Fixed an issue where playing at a very low framerate could lead to jellyfish bouncing not working
- Fixed an issue where low framerates could lead to slightly inconsistent jump distances
- Fixed a bug related to enemy engagement AI
- Fixed a lingering hitbox on Blind Lurcher fight
[ 2024-03-01 16:50:45 CET ] [ Original post ] Phosfi Demo Update - 2/16/24A new update for the Phosfi Demo is now live! Thanks again to everyone who continues to try the demo and provide feedback, these changes are a direct result of your input.
Patch Notes
Features
- Continued improvement to jump feel
- Increased movement speed by ~5%
- Increased control responsiveness in air and on ground
- Added markers to redisplay tutorials that used to be one time only
- Changed some level geometry to streamline the experience
- Reduced loading time between levels by ~25%
- Changed some prompts to default to 'Yes' option (fast travel, using keys)
- Increased chain climbing speed by ~25%
Bug FIxes
- Fixed an issue that could cause the plyer to respawn on spikes
- Fixed an issue preventing the player from bouncing on urchins when i-frames were active
- Fixed an issue causing input lag when attacking
- Fixed an issue where the player could become stuck in the falling animation when wedged next to a jellyfish
- Other small fixes
[ 2024-02-16 22:57:59 CET ] [ Original post ] Phosfi Demo Update - 2/9/24Another update for the Phosfi Demo is live! Following more feedback from players over the last week, this update aims to address several common issues encountered with the demo.
Patch Notes
Feature Updates
- Increased jump speed, gravity and "snap" of movement. Also increased base move speed to retain original jump distance and height. Increased inertia of basic movement. As part of an ongoing effort to get movement to feel as good as possible, this update aims to address a common feeling of slowness and floaty-ness. These changes are intended to make the character feel more alive, grounded and responsive
- Changed how relic equipping is displayed and interacted with. Several players were confused by the relic UI (which needs help). This change should make it more obvious what is equipped and how to equip and unequip relics
- Increased dash speed while shortening dash duration. This should make the dash feel quicker while retaining the same distance
- Made boosting off Urchins and jumping off of the Lash ability more consistent
- Changed default control scheme. Many players had issues with the default control scheme. While the controls are customizable, this change aims to reduce initial frustration. If you already played the demo but would like to switch to the new default layout, you can use the "reset to default" feature in the controls settings.
- Animation improvements
Bug Fixes
- Fixed an issue with controller deadzones being too large, making movement feel less responsive
- Fixed an issue with y-axis input on some controllers
- Fixed an issue where navigating the map could feel erratic
- Fixed an issue causing players to respawn further away than intended in some areas
- Fixed an issue allowing players to boost much higher than intended off Urchins and with the Lash
[ 2024-02-10 00:47:56 CET ] [ Original post ] Phosfi Demo Update 2/2/24A new update for the Phosfi demo is live!
Thanks as always to everyone who has given us feedback on the demo so far!
Patch Notes
Features
- Added new art assets
- Updated visual feel of all areas to better match intended atmosphere
- Updated UI stylings slightly
- Reduced delay on attacks and increased attack hitboxes slightly
- Continued improvements to jump feel
Bugs
- Fixed an issue with extra sensitivity on the y-axis for some controllers (ongoing monitoring)
- Fixed a crash related to certain attack animations from enemies in rare circumstances
[ 2024-02-02 18:12:15 CET ] [ Original post ] Phosfi LivestreamWatch the developer play the demo for Phosfi! Stop in and ask questions about the game and download the demo for free to try it out yourself. If you're interested in the full release of Phosfi, remember to add it to your Wishlist!
[ 2024-01-29 15:18:29 CET ] [ Original post ] Phosfi LivestreamWatch the developer play the demo for Phosfi! Stop in and ask questions about the game and download the demo for free to try it out yourself. If you're interested in the full release of Phosfi, remember to add it to your Wishlist!
[ 2024-01-29 15:18:18 CET ] [ Original post ] Phosfi Demo Update - 1/27/24The Demo for Phosfi has been updated based on community feedback, read the full patch notes below.
Patch Notes
Features
- Implemented custom map pins feature from full game based on player requests.
- Added increased inertia to movements when in shell.
- Increased jump speed and responsiveness.
- Improved visual fidelity in some areas.
- Made some level geometry changes to starting zone for increased clarity in exploration.
Bug Fixes
- Fixed an issue where repeatedly jumping in Flotsam would cause you to hover to the ceiling.
- Fixed an issue where you could respawn too close to ledges.
- Fixed an issue where underwater movement wasn't being properly modified
- Fixed a dead-zone issue with some controllers
[ 2024-01-27 18:57:58 CET ] [ Original post ] Phosfi Demo UpdateThank you to those who have already played the demo and left us feedback! This update addresses the most common issues we've seen and heard about from you. We are constantly working to make Phosfi the best game it can be, and your feedback is incredibly valuable to that process.
Patch Notes
Features/Changes
- Made the jump snappier by modifying the jump impulse curve, increasing gravity and reducing hangtime. Other adjustments were made to maintain the same jump height and distance as before.
- Increased movement speed while running and rolling in shell form by ~15%
- Made some tutorial popups last longer on screen
- Improved relic UI to better indicate which relics are active (all UI is still undergoing further improvements and is subject to change)
- Increased invincibility frames after taking damage by ~40%
- Cooking ingredients are now automatically picked up
- Bouncing off a jellyfish now nudges the player into alignment with the resulting jump vector to help with platforming challenges.
Bug Fixes
- Fixed a frame delay issue with attack inputs when FPS was low.
- Fixed an issue giving players more hangtime on jumps that intended.
- Fixed a bug causing dash not to reset when bouncing off a jellyfish in some situations
- Added some missing controller button graphics for some controllers
- Fixed an issue with control remapping between controller types causing changes not to persist across play sessions
- Various UI fixes related to spelling and clarity
If you would like to let us know what you think of the demo, feel free to leave comments on the
Demo Feedback Discussion page!
[ 2024-01-23 16:16:26 CET ] [ Original post ] Phosfi Demo Available Now!

We're super excited to let you know that free, playable demo for our upcoming game, Phosfi is now available! We'd love to get feedback on the demo and the direction of the game, so if you check it out, let us know on this Community Post
In a world shrouded by darkness and ruled over by Eldritch monstrosities, embark on a journey to restore the last beacon of light and discover the legacy of the Light Keepers. Reclaim the unique powers of your ancestors and discover the secrets of their past as you fight your way through a large, interconnected world. Explore long lost temples, coastal cliffs, and everything in between while befriending the unique sea-inspired denizens of the land along the way. Forage for unique ingredients and discover powerful (and tasty) recipes as you embark on an epic journey filled with just the right amount of creepy, cozy and tentacles.

Metroidvania style design
- Inspired by classic metroidvanias and souls-lite combat.
- Combines non-linear exploration and crafting with unique, skill-based combat encounters and platforming challenges.
Hand drawn and hand animated characters and levels
- Explore a large variety of unique hand crafted environments.
- Discover hidden secrets, ancient relics and strange friends and foes alike.
- Mix a little cozy in with your sea monsters - make a home for yourself in the aptly named Pier Town.
Challenging, precision combat
- Master an expanding set of combat and movement abilities to defeat ever more challenging foes.
- Choose the playstyle that works for you by combining powerful Relics.
Intricate platforming
- Utilize an array of fluid movement abilities to conquer even the most complex platforming sequences.
Deep, discoverable lore and mythology
- Uncover the mysteries of the past as told through items, conversations and environmental storytelling.
- Discover the mythology that drives the world, and come face to face with its Gods.

Through lands shrouded by primordial darkness and dominated by creatures of legend, will you embrace your legacy and take up the mantle of the last Light Keeper?
[ 2024-01-20 16:12:42 CET ] [ Original post ] 
In a world shrouded by darkness and ruled over by Eldritch monstrosities, embark on a journey to restore the last beacon of light and discover the legacy of the Light Keepers. Reclaim the unique powers of your ancestors and discover the secrets of their past as you fight your way through a large, interconnected world. Explore long lost temples, coastal cliffs, and everything in between while befriending the unique sea-inspired denizens of the land along the way. Embark on an epic journey filled with just the right amount of creepy, cute and tentacles.

Inspired by classic metroidvania design and souls-lite combat, Phosfi combines non-linear exploration with unique, skill-based combat encounters.

Metroidvania style design
- A vast, interconnected world full of dangers, mysteries and treasures.
- Non linear progression - use new abilities to choose your own path.
Hand drawn and hand animated characters and levels
- Explore a large variety of unique hand crafted environments.
Challenging, precision combat
- Master an expanding set of combat and movement abilities to defeat ever more challenging foes.
- Choose the playstyle that works for you by combining powerful Relics.
Intricate platforming
- Utilize an array of fluid movement abilities to conquer even the most complex platforming sequences.
Deep, discoverable lore and mythology
- Uncover the mysteries of the past as told through items, conversations and environmental storytelling.
- Discover the mythology that drives the world, and come face to face with its Gods.
Through lands shrouded by primordial darkness and dominated by creatures of legend, will you embrace your legacy and take up the mantle of the last Light Keeper?

MINIMAL SETUP- Processor: Intel Core i5 / AMD Zen 2Memory: 4 GB RAM
- Memory: 4 GB RAM
- Graphics: NVIDIA GTX 560 / AMD 8 RDNA 2
- Storage: 2 GB available space
RECOMMENDED SETUP- Processor: Intel Core i5 / AMD Zen 2Memory: 8 GB RAM
- Memory: 8 GB RAM
- Graphics: NVIDIA GTX 970 or similar
- Storage: 4 GB available space
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