Games like Bigger Brain
Games like Bigger Brain include Clustertruck, ALTF4, Kao the Kangaroo: Round 2 (2003 re-release), Montaro, and SONIC X SHADOW GENERATIONS. We matched them by the tags players give Bigger Brain on Steam (Action, Casual, Walking Simulator, Platformer, and Automobile Sim): closest matches first, and among equally close ones the better-known games.

Clustertruck
Shared: Action · Automobile Sim · 3D Platformer

ALTF4
Shared: Action · Runner · 3D Platformer

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

Montaro
Shared: Casual · Cute · Platformer

SONIC X SHADOW GENERATIONS
Shared: Action · 3D Platformer · Platformer

Woodle Tree Adventures
Shared: Platformer · Action · 3D Platformer

Haste
Shared: Action · 3D Platformer · Runner

Sonic Adventure 2
Shared: Action · Platformer · 3D Platformer

Last Train Outta' Wormtown
Shared: Action · Platformer · 3D Platformer

Baby Steps
Shared: Action · Walking Simulator · Casual

VHOLUME
Shared: Casual · Platformer · 3D Platformer

ATLYSS
Shared: Action · 3D Platformer · Cute

Pikuniku
Shared: Casual · Action · Cute

Neon White
Shared: Action · 3D Platformer · Platformer

Toree 2
Shared: Action · Platformer · 3D Platformer

Sonic Adventure DX
Shared: Platformer · Action · 3D Platformer

Spyro™ Reignited Trilogy
Shared: Action · 3D Platformer · Platformer

Sonic Frontiers
Shared: Action · 3D Platformer · Platformer

DJMAX RESPECT V
Shared: Casual · Action · Cute

Crash Bandicoot™ 4: It’s About Time
Shared: Action · Platformer · 3D Platformer

Crumble
Shared: Action · Platformer · 3D Platformer

Yooka-Laylee
Shared: 3D Platformer · Action · Platformer

Chained Together
Shared: Casual · Platformer · 3D Platformer

Frogun
Shared: Action · Platformer · 3D Platformer