A few suggestions regarding kicking mechanics and aesthetics. A good way to make bomb stopping look less abrupt is not to snap it onto the tile if it's already gone past the center of it. This would make it so that you would have to press bomb stop BEFORE it arrives at the next tile (unless it isn't past the center) and it would prevent the bomb from looking like it teleported backwards. I'm not sure how much this impacts the gameplay. This also might prevent you from stopping a kicked bomb before it reaches the tile right next to its original position when you kicked it. Another thing is making normal black bombs roll. I played Bombzone Refueled lately it bomb kick really looked quite nice because of it. It also doesn't reset the bomb's rotation when the bomb is stopped by something so you would have bombs in awkward positions but it seems to add a little more variety. I think in Bombzone you would also lay the bomb in mostly upright but slightly off positions which you could do in Power Bomberman by taking a random frame from the roll animation and using it as the appearance of an unkicked feshly layed bomb.