Wow!
GOOD:
Gameplay is smooth and the controls work great. Each has its purpose, and the controls are simple and none of them are worthless like some games with pointless blocks or weak attacks. The graphics have a unique cartoony style to them, but with gradients. The animation for the game and a some cutscenes are good too. My favorite cutscene was going into Sunshine Plains; there's combat at the beginning, and then the hilarious dialog with the trees. The menu is easy to navigate and understand, and I like how it supports keyboard and mouse control, although I would have liked keyboard control for the pause menu. The music is expansive, fitting in most levels, and dramatic. The choices in making the selection were great! One of the best soundtracks ever! The pictures and hats provided a fun distraction, and it was fun to fight Safuma Poll with an afro. Some of the levels are really fun, too, and it's also convenient how your scores are automatically submitted. My favorite levels were the second Sun Station level, Missile Madness, the first two Lavarious levels, both of the ice levels, the Robot Factory, and Parliament. The Parliament especially was an unspeakably fun level to play. It had tons of traps, and beating it without taking damage was a huge challenge. I loved every minute of it.
BAD:
The graphics aren't that good. The two biggest things I noticed were that you used the same ground Movie Clip over and over. For the glass you broke, for the platforms that electrocuted you, for Cheeseworld, Sun Station, and a few other ones, too. Even circular platforms had the same Movie Clip as a support beam. The second one is that you use too many filters. Sunshine Plains uses a not-too-subtle bevel effect on the ground. Bevels like that are scattered all over the game. Another thing is the cutscene animation. Some of it was good (like the scene where Moovlin enters Sunshine Plains), but some (like the scene before the Truff battle and before Lavarious) had poor easing and movements. For Sun Station, you can ground pound on a little platform and fall through it. For Selia Desert, the three 2-sided platforms are almost hard to clear without taking damage, especially while rotating. I've done it, but it's stupid-hard, not fun-hard. Doodleworld has a glitch where you can fall through the floor if you have enough momentum. Mooviball doesn't even roll or support loops, and has a bad principle of momentum. Sunshine Plains is annoying during the flights, and the level goes by so fast you have to memorize it. Gears are worthless. You move slowly in the water level and can't dive. The gears work pretty badly in the Robot Factory, and Midnight Carnival isn't randomized, so if you memorize it you can get an infinite score. Lava Survival is both easy and luck-based. The Truff battle is so methodical that you get bored, and the Safuma Battle isn't long or hard enough. For the multiplayer modes, you roll in the same direction regardless of which direction you're rolling in, and the camera for the collecting game screws up. There's also no confirmation button on the Erase File button. Another gripe is the cutscenes for the game have some really bad jokes (although some good ones as well). The storyline was bad, despite the good dialog. Not much happens throughout all of the levels; most of the levels are excuses for gameplay. Some scenes could be skipped and others couldn't be. Some of the voices are pretty bad, too. Truff and Polypiscis (who also had terrible dialog) were bad, and Bobby's voice was mediocre. When Pamela is introduced, the sheet Moovlin sleeps under is starched. It moves like a solid object and not like fabric. On the topic of Pamela, the boobs are bad. The sound effects were bad too. I liked some of them (especially the bridge in Cheeseworld and the breaking glass) but some, like taking damage, were annoying. On a last note, the menu buttons are very bland and could have used a makeover. Some of them don't even change when you roll over them!
Overall, this game was really fun to play and make, but it's not perfect.