Hello DeltaPhysicists! 0.4 has been pushed to public/live. Also took the chance to update the demo, see demo section below for details.
Below is a summary of changes you might already know from previous patch notes.
Summary of 0.4 Changes (from previous patch notes / devlogs
New Area - Rotational Mechanics
Continuing with the physics-based inspiration, the key idea and theme behind this area is a Rube Goldberg machine that has the enemy demonstrate various rotation-based phenomena. Mechanics-wise, a new upgrade is waiting, as well as a new transportation gimmick to explore the map with!
New Upgrades & Icons

New progression upgrades have already been implemented and mostly tested, just waiting for the respective level designs to implemented for highlighting their capabilities. New icons have been added along with the upgrades, and the existing icons have been redone to better fit the game's style.
NOTE: The later 3 "super"-upgrades are designed to highlight the interactions between the 3 earlier upgrades, and require the corresponding upgrades before taking effect. For example, the new upgrade in 0.4 requires both the Spin and Rope upgrades.
NOTE2: The existing rope icon has been repurposed to a later upgrade.
Patch Notes
Air Particle Changes
- smoother wind trail by decreasing distance between vertices
- adjusted force field for smoother and more consistent path
Audio
- rolling SFX now also factors in linear speed; will sound quieter at lower speeds
- decreased range for some SFX, to be less audible when off-camera
Misc.
- added trigger to de-spawn certain objects in the Loop, to help restabilize the simulation
- slightly decreased size of some collision hitboxes, to prevent unintended physical interactions
- adjusted some more loading zones, to prevent player from seeing unloaded map parts
- fixed some misaligned graphics
Demo Update
To better reflect the current state of the game, the demo has been updated with the new graphics and bugfixes. The previous version can still be accessed through Steam Branches/Beta.
What will be changed
- Spin and Rope maps are replaced by their corresponding redesigns
- updated Graphics and Audio
- bug-fixes and Physics tweaks made after the previous demo
- new save system (full-version saves are NOT compatible and can break)
What will NOT be changed
new maps and mechanics introduced in 0.4
later maps also will not be added; minor map tweaks may happen
Enjoy exploring the new area and mechanics!

[ 2025-02-22 02:24:15 CET ] [ Original post ]