Graphics are nice, though the game lagged like crazy on my pc, but i'll make a discount for this one since it's a Unity game. Controls are really awkward, i don't think picking up objects with numbers was a good idea. Also it's quite hard to figure out what to do before you die out of hunger. I liked the idea though, it's definitely unique !
Viewing post in Lost at Sea Sharp jam comments
Did you try lowering the graphic settings?
You can also interact with things with the left mouse button and select the interaction with mouse wheel or Q and E or whatever else you configure. It's like the standard toolbar you have in many games like Minecraft or Space Engineers.
I wasn't sure how else to make interactions since most objects have multiple actions. Some games have rather random buttons or tap vs hold or require equipping a specific tool for a specific action but even then you sometimes still have arbitrary differences between left and right click or click and hold.