Games like Alien Battlefield
Games like Alien Battlefield include Cookie Clicker, The Adventure of NAYU, SpaceEngine, To The Core, and Click the Button. We matched them by the tags players give Alien Battlefield on Steam (Incremental, Casual, Creature Collector, Space Sim, and Point & Click): closest matches first, and among equally close ones the better-known games.

Cookie Clicker
Shared: Incremental · Casual · Indie

The Adventure of NAYU
Shared: Incremental · Casual · 2D

SpaceEngine
Shared: Casual · Space Sim · Space

To The Core
Shared: Incremental · Casual · 2D

Click the Button
Shared: Casual · Incremental · Point & Click

SPACEPLAN
Shared: Incremental · Casual · Space

Space Pilgrim Episode I: Alpha Centauri
Shared: Casual · Female Protagonist · Space

Melvor Idle
Shared: Casual · 2D · Indie

A Game About Feeding A Black Hole
Shared: Incremental · Casual · 2D

Cosmoteer: Starship Architect & Commander
Shared: 2D · Space Sim · Space

That's not my Neighbor
Shared: Casual · Point & Click · Incremental

Alice's Gaze
Shared: Incremental · Casual · Female Protagonist

Keep on Mining!
Shared: Incremental · Casual · Indie

Space Rock Breaker
Shared: Incremental · Casual · 2D

Samorost 1
Shared: Casual · Point & Click · 2D

Nodebuster
Shared: Incremental · Casual · 2D

Human-powered spacecraft
Shared: Incremental · Casual · Indie

Idle Champions of the Forgotten Realms
Shared: Incremental · Casual · Fantasy

Shelldiver
Shared: Incremental · Casual · 2D

Defy Gravity Extended
Shared: 2D · Casual · Space

Digseum
Shared: Incremental · Casual · Point & Click

Timberman
Shared: Casual · 2D · Incremental

There Is No Game: Wrong Dimension
Shared: Point & Click · Casual · Indie

Florence
Shared: Casual · Female Protagonist · Indie