The game is done well technically, no complaints there, though I'm not a fan of having to use the whole keyboard and mouse simultaneously. I could use both hands typing the letters, but switching back and forth with one hand between mouse and keyboard to remove the damaged cubes is time consuming and not very ergonomic IMO, and I hate to have one hand only to type all keys, it just feels too slow and burdened. Maybe it wouldn't be such a problem if not most of the cubes were bad ones. The factory really should look into improving their production quality. :o
I would very much prefer a mechanic where you can identify the damaged cubes just by looking at them and then type out the cubes that should be sorted out. I wouldn't mind having more letters/words on the cubes then instead.
On the plus side this is one of the rare cases I have seen on Trijam where 3D makes a difference because it's fun to just watch the cubes tumble and roll around. How about building on top of that? You could have some kind of box where all the cubes are in, and the damage might show only on one or some sides but not all, and you'd use the keyboard to shuffle, tilt and mix the cubes around so you can spot the bad ones and then type them out.