Arena is a game mode in Hamsterball. It is where 4 hamsters (red, yellow, blue, white) compete to earn points. When the time is up the ball with the most points wins.
Level Uniqueness
Warm-up: None
Beginner: Bumpers in the railings, 8-ball
Intermediate: Higher Platform with a different shape to accommodate the Mouse Traps
Dizzy: Spinning Floor, 5 rails
Tower: Maces, Flamethrower, Neon Pink Background
Up: Two levels connected by an "elevator"
Neon: 8-ball, Neon Light, An all-around "support pipe" that becomes solid when lit up.
Expert: Big Fan
Odd: Nothing much besides an odd floor
Toob: Tubes, Supporting Bumpers, and one central bumper
Wobbly Race: Wobbling Platform
Glass Race: Glass, 8-ball, 3 rails
Sky Race: Pokey Pipes
Master Race: Blast Hole
Impossible Race: Clockwise and Counter-clockwise shifting gears
Trivia
THE 8-BALL APPEARS THREE TIMES (BEGINNER RACE, NEON RACE, AND GLASS RACE).