ObscureStellar Survivor
54% matchTower Defense, Aliens, Similar premise
AAAFar Cry®
47% matchOften compared to it, FPS, Shooter
ObscureGalaxy Defense War
48% matchTower Defense, Aliens
ObscureUs Against Aliens
47% matchAliens, FPS, Similar premise
ObscureStarstrike
42% matchRoguelite, Space
ObscureReSpaced
48% matchFPS, Roguelite, Similar premise
IndieSpace Run
49% matchTower Defense, Space, Similar premise
ObscureTowerful Defense: Prologue
43% matchTower Defense, Aliens, Similar premise
AAExecutive Assault 2
43% matchOften compared to it, FPS, Space
AAStarship Troopers: Extermination
45% matchAliens, FPS, Similar premise
ObscureArtificial Extinction
48% matchTower Defense, FPS, Similar premise
ObscureMobile Forces
46% matchOften compared to it, FPS, Shooter
IndieSCP: Secret Laboratory
43% matchOften compared to it, FPS, Survival
ObscureHive Slayer
43% matchAliens, FPS
ObscureMotor Assailant: Betrayal
37% matchAliens, Space, Similar premise
ObscureSpace Survival
41% matchSpace, Aliens, Similar premise
IndieAngels Fall First
41% matchOften compared to it, FPS, Space
ObscureBoxed Tower: Actual Tower Defense
39% matchTower Defense, Survival
ObscureGalactic Missile Defense
41% matchTower Defense, Aliens, Similar premise
ObscureIncoming + Incoming Forces
43% matchSci-fi, Shooter, Similar premise
ObscureSpace Rogue
39% matchSpace, Survival
ObscureSpacejacked
42% matchTower Defense, Aliens
ObscureExophobia
40% matchFPS, Aliens, Similar premise
ObscureCDF Ghostship
44% matchFPS, Space
ObscureRadiant Defense
44% matchTower Defense, Space, Similar premise
ObscureSpaceMine
39% matchTower Defense, Shooter, Similar premise
IndieOne-armed robber
38% matchOften compared to it, FPS, Shooter
ObscureCosmic Swarm
39% matchAliens, Space, Similar premise
ObscureLast Stand: Defense
39% matchTower Defense, Roguelite
ObscureXenoids
39% matchAliens, Space
ObscureCosmic Raze
39% matchTower Defense, Sci-fi
ObscureAstro Looter: Survivor
38% matchTower Defense, FPS, Similar premise
AAAliens vs. Ghosts
45% matchFPS, Aliens
ObscureDefenders of the Last Colony
36% matchTower Defense, Space, Similar premise
ObscureRogue Blaster
38% matchFPS, Roguelike
ObscureOutpost 3
39% matchTower Defense, Aliens
ObscureFRAGROOM: Defenders
37% matchTower Defense, FPS
ObscureInvader TD
40% matchTower Defense, Aliens
ObscureTep The Destroyer TD
38% matchTower Defense, Aliens
ObscureQueen of Tower Defense
38% matchTower Defense, FPS
ObscureDesperate Place
38% matchTower Defense, Space
ObscureEscort Commander
37% matchSpace, Strategy, Similar premise
ObscureSpace Cycle
48% matchTower Defense, Space, Similar premise
ObscureBounty
46% matchFPS, Sci-fi, Similar premise
AAUnfortunate Spacemen
38% matchOften compared to it, Space, Survival
ObscureDefender Bros
38% matchTower Defense, Aliens
ObscureSpace Mercenary Defense Force
39% matchAliens, Space, Similar premise
ObscureCatharage
32% matchRoguelite, Space