Games like RUMP! - It's a Jump and Rump!
Games like RUMP! - It's a Jump and Rump! include Retrowave, Kao the Kangaroo: Round 2 (2003 re-release), SpeedRunners, Haste, and Drift86. We matched them by the tags players give RUMP! - It's a Jump and Rump! on Steam (Racing, Indie, Casual, Action, and 3D Platformer): closest matches first, and among equally close ones the better-known games.

Retrowave
Shared: Racing · Indie · Casual

Kao the Kangaroo: Round 2 (2003 re-release)
Shared: Casual · Action · 3D Platformer

SpeedRunners
Shared: Racing · Indie · Action

Haste
Shared: 3D Platformer · Action · Racing

Drift86
Shared: Racing · Casual · Indie

Guts and Glory
Shared: Racing · Action · Casual

s&box
Shared: Casual · Action · 3D Platformer

Superflight
Shared: Indie · Casual · Action

Cart Racer
Shared: Indie · Racing · Casual

Clustertruck
Shared: Action · 3D Platformer · Indie

Marble Skies
Shared: Indie · Racing · Casual

OutDrive
Shared: Racing · Indie · Casual

Tower Unite
Shared: Casual · Indie · Action

Need for Speed™ Unbound
Shared: Racing · Action · Casual

Timberman
Shared: Casual · Indie · Action

Wreckfest
Shared: Racing · Indie · Action

GRIP: Combat Racing
Shared: Racing · Indie · Action

Razortron 2000
Shared: Racing · Casual · Indie

VRC PRO
Shared: Racing · Indie · Action

Witch It
Shared: Casual · Indie · Action

Sparkle 2 Evo
Shared: Indie · Casual · Action

Notes of Soul
Shared: Action · Indie · Casual

Pumpkin Jack
Shared: Action · Indie · 3D Platformer

TO THE TOP
Shared: Indie · Racing · Action