0.5x speed or rewind

[733737]

can the game logic be manipulated to rewind or slow down game speed?

[jensj12]

Slower game speed is being worked on: #13869

Rewinding the game is currently impossible due to information being thrown away as soon as it's no longer relevant (where did that peep turn?). The only way to do this currently is to store the entire state of the game of previous frames (and possible simulate forward a bit from there), which is likely not feasible either. If you want to rewind, load a savegame or make a video and rewind that.

[LaserBread]

It would be nice to have an undo feature.