Games like Retro Blaster : Mech Madness #1
Games like Retro Blaster : Mech Madness #1 include Portal 2, Chained Together, Portal, Pikuniku, and VLADiK BRUTAL. We matched them by the tags players give Retro Blaster : Mech Madness #1 on Steam (Action, Adventure, Casual, Action-Adventure, and Platformer): closest matches first, and among equally close ones the better-known games.

Portal 2
Shared: Platformer · Puzzle · Puzzle Platformer

Chained Together
Shared: Adventure · Casual · Platformer

Portal
Shared: Puzzle · Puzzle Platformer · 3D Platformer

Pikuniku
Shared: Adventure · Casual · Puzzle

VLADiK BRUTAL
Shared: Action · Adventure · Shooter

Ratchet & Clank: Rift Apart
Shared: Adventure · Action-Adventure · Action

Pumpkin Jack
Shared: Action · Adventure · 3D Platformer

Sonic Frontiers
Shared: Adventure · Action · 3D Platformer

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

Tomb Raider Game of the Year
Shared: Action · Adventure · Action-Adventure

Ori and the Will of the Wisps
Shared: Action · Platformer · Adventure

Human Fall Flat
Shared: Adventure · Puzzle · Action

Atomic Heart
Shared: Adventure · Action · Action-Adventure

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

Tomb Raider: Underworld
Shared: Action · Adventure · Puzzle

Tomb Raider: Legend
Shared: Action · Adventure · Platformer

Moss VR
Shared: Adventure · Action · Puzzle

Planet of Lana
Shared: Action · Adventure · Puzzle Platformer

Rise of the Tomb Raider™
Shared: Action · Adventure · Action-Adventure

Darwin's Paradox!
Shared: Action · Adventure · Action-Adventure

Trine 3: The Artifacts of Power
Shared: Action-Adventure · Puzzle Platformer · 3D Platformer

Squirrel with a Gun
Shared: Action · Platformer · Action-Adventure

Tomb Raider IV-VI Remastered
Shared: Action · Adventure · Action-Adventure

Journey To The Savage Planet
Shared: Adventure · Action · Action-Adventure