Very well executed in visuals and especially audio.  While the main gameplay is simple pong, it's energy boost mechanic makes things a bit interesting by necessitating losing to get the speed boost and softens the blow of losing a goal a little. The game even accounts for awkward scenarios when the ball gets stuck between the paddle and the wall.

While several have commented on the difficulty of the game, my main issue is time. It takes 10 seconds after each goal is scored before play is resumed, drastically interrupting the pace. And given that it takes about 20 goals to win Belly Resistance Mode, a perfect match would take 3.5 minutes plus the time it takes to score goals. But given that no match can be perfect, the time inflates (lol) greatly. The last time sink is always having to button mash through the intro story when starting from the main menu. I think I wouldn't mind the difficulty as much if I could play way more rapidly.

If anything, I'm very much looking forward what may come in the future. Given the great polish in the game and how receptive feedback appears to be taken, I think a future game will be even better.