The only downside to the arrow keys is that there are not any other keys conveniently nearby to use for missiles and bombs. The player would have to move their hand to different keys to use those weapons.
I do really like this game, the puzzles are hard, and some of the blocks are quite creative. One thing i'd suggest is to early on say what the different colours of force feild things do. I can't wait for the full version to come out! Overall, i'd say maybe 4/5 if it was a full game, but fore a DEMO, this is 5/5.
Hi! Welcome back!