https://store.steampowered.com/app/421050/Deponia_Doomsday
Deponia Doomsday on Steam
Can you change Deponia's fate? Do you have what it takes to change Rufus' past, present and future without accidently destroying the whole planet? Fight time...
deponia doomsdaysteam
https://www.gog.com/forum/deponia_series/deponia_doomsday_deponia_4_announced/page2
Deponia Doomsday (Deponia 4) announced, page 2 - Forum - GOG.com
deponia doomsdayannouncedforumgog