Games like Space Runaway
Games like Space Runaway include METAL SLUG, Kung Fury: Street Rage - Ultimate Edition, METAL SLUG 3, Huntdown, and METAL SLUG X. We matched them by the tags players give Space Runaway on Steam (Action, Arcade, Side Scroller, 2D, and 1980s): closest matches first, and among equally close ones the better-known games.

METAL SLUG
Shared: Action · Arcade · Side Scroller

Kung Fury: Street Rage - Ultimate Edition
Shared: Arcade · Action · Side Scroller

METAL SLUG 3
Shared: Arcade · Action · Side Scroller

Huntdown
Shared: Side Scroller · Action · 2D

METAL SLUG X
Shared: Action · Arcade · 2D

Dome Keeper
Shared: Action · Singleplayer · Sci-fi

ARCADE GAME SERIES: GALAGA
Shared: Action · Arcade · 2D

METAL SLUG 2
Shared: Action · Arcade · Side Scroller

SANABI
Shared: Action · 2D · Singleplayer

Streets of Rage 4
Shared: Action · 2D · Arcade

Contra Anniversary Collection
Shared: Action · Side Scroller · 2D

Bloodstained: Curse of the Moon
Shared: Action · 2D · Retro

Blazing Chrome
Shared: Action · Side Scroller · Retro

UFO 50
Shared: Action · Arcade · 2D

Broforce
Shared: Action · 2D · Side Scroller

Sonic Mania
Shared: 2D · Retro · Action

Hotline Miami 2: Wrong Number
Shared: Action · Retro · 1980s

Terminator 2D: NO FATE
Shared: Side Scroller · Arcade · Action

Contra: Operation Galuga
Shared: Action · Arcade · Side Scroller

Cyberhunt
Shared: Action · Arcade · 2D

Shovel Knight: Treasure Trove
Shared: Retro · Action · 2D

METAL SLUG XX
Shared: Action · 2D · Arcade

ARCADE GAME SERIES: PAC-MAN
Shared: Action · Arcade · 2D

MEGA MAN X DiVE Offline
Shared: Action · Side Scroller · 2D

