Played the game originally about 25 hours on steamdeck through GOG download. Purchased it on steam due to sale to confirm it worked and for cloud saves. -Game functions 100% and all controls work Despite not being labelled as supporting controllers. -While playing i was using M/KB setup with trackpad and using R2 to select and move characters around and found by accident the thumbsticks and the ABXY work, aswell as pause and select buttons. -Game runs smooth 60fps without issues. -Averages about 4 1/2 hours of play time in my experience without any tinkering or settings adjusted through GOG. Steam version should net same results and i imagine the community can tweak their settings to get a good 6 hours out of it. Happy gaming y'all!